MC

7918_9bb8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

DNA Ligase (60.0 kDa) Correct Green Fluorescent Protein (28.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect MC

8ba9_df69

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pepsin (34.5 kDa) Incorrect Lipase (40.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect Fibrinogen (63.5 kDa) Correct Transferrin (80.0 kDa) Incorrect MC

d5a9_795b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Enolase (42.5 kDa) Correct Pepsin (34.5 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect MC

cbef_fff0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Collagen (134.0 kDa) Correct Catalase (65.5 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect MC

cfc3_9c7e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect Lipase (40.0 kDa) Correct Agglutinin (22.0 kDa) Incorrect MC

d5be_d81c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

α-Amylase (61.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Aldolase (47.5 kDa) Correct MC

296f_3b4d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Actin (43.0 kDa) Incorrect Collagen (134.0 kDa) Correct Heat Shock Protein (70.1 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

d29f_4083

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect γ-Globulin (57.0 kDa) Correct Green Fluorescent Protein (28.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

914a_6c8b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Immunoglobulin (145.0 kDa) Correct Epidermal Growth Factor (40.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect MC

d45e_0ae9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

α-Amylase (61.0 kDa) Incorrect Hexokinase (120.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect MC

a916_3f3c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Hexokinase (120.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect MC

ccdc_4d8d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Heat Shock Protein (70.1 kDa) Correct Aldolase (47.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect MC

885f_d655

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serine Protease (22.0 kDa) Incorrect Actin (43.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Correct Myoglobin (18.0 kDa) Incorrect Serum Albumin (66.2 kDa) Incorrect MC

55a2_8cef

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serine Protease (22.0 kDa) Correct Ovalbumin (45.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect Lactalbumin (13.0 kDa) Incorrect MC

48ab_bec3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Cytochrome c (13.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Correct MC

9307_88d2

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Actin (43.0 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Incorrect Pepsin (34.5 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

d2f3_d703

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Estrogen Binding Protein (115.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect MC

6f41_43b3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect Transferrin (80.0 kDa) Correct MC

3825_665b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Fibrinogen (63.5 kDa) Incorrect Ovalbumin (45.0 kDa) Correct Agglutinin (22.0 kDa) Incorrect MC

b0bb_8463

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Estrogen Binding Protein (115.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect α-Amylase (61.0 kDa) Correct MC

caed_d9a5

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Correct Serum Albumin (66.2 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect MC

0109_87c0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Agglutinin (22.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Lipase (40.0 kDa) Correct Transferrin (80.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect MC

672b_f69f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldehyde Dehydrogenase (53.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Actin (43.0 kDa) Correct Estrogen Binding Protein (115.0 kDa) Incorrect MC

a45b_c2ee

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pyruvate Kinase (60.0 kDa) Correct Prostate-Specific Antigen (30.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect MC

1197_739c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Collagen (134.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Correct Pepsin (34.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

d8e8_2e9f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

γ-Globulin (57.0 kDa) Correct Aldolase (47.5 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

fea3_4cc1

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Immunoglobulin (145.0 kDa) Correct Aldolase (47.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect MC

3a4c_a19e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Correct Hexokinase (120.0 kDa) Incorrect Actin (43.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect MC

6eb7_7dbb

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Catalase (65.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Ovalbumin (45.0 kDa) Correct Green Fluorescent Protein (28.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect MC

b370_297d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Collagen (134.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Actin (43.0 kDa) Incorrect MC

5249_87cd

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect γ-Globulin (57.0 kDa) Correct MC

6083_df9a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pepsin (34.5 kDa) Correct Serine Protease (22.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect MC

d3f9_5705

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

γ-Globulin (57.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Correct Estrogen Binding Protein (115.0 kDa) Incorrect MC

b1ab_ccf9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Fibrinogen (63.5 kDa) Incorrect Actin (43.0 kDa) Correct Green Fluorescent Protein (28.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect MC

8a76_a703

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Fibrinogen (63.5 kDa) Incorrect Collagen (134.0 kDa) Correct Transferrin (80.0 kDa) Incorrect MC

bdd9_9fe0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Correct Hexokinase (120.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

e98e_1bea

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Horseradish peroxidase (34.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Serum Albumin (66.2 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect Actin (43.0 kDa) Incorrect MC

82f8_e90e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Heat Shock Protein (70.1 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect MC

2bc5_0527

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Fibrinogen (63.5 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect MC

d945_061c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Lipase (40.0 kDa) Incorrect Pepsin (34.5 kDa) Correct Hexokinase (120.0 kDa) Incorrect Fibrinogen (63.5 kDa) Incorrect MC

13b0_52ec

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Myoglobin (18.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Correct Serine Protease (22.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect MC

c536_3104

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

DNA Ligase (60.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Ovalbumin (45.0 kDa) Correct Agglutinin (22.0 kDa) Incorrect MC

521d_c786

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pyruvate Kinase (60.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect Ovalbumin (45.0 kDa) Correct Serine Protease (22.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

bcb6_b459

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Horseradish peroxidase (34.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect Agglutinin (22.0 kDa) Correct Actin (43.0 kDa) Incorrect Cytochrome c (13.0 kDa) Incorrect MC

15e8_a474

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Ovalbumin (45.0 kDa) Correct Serum Albumin (66.2 kDa) Incorrect MC

60d4_32e9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Pepsin (34.5 kDa) Correct MC

e321_409b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Epidermal Growth Factor (40.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Correct MC

a2c6_8274

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect γ-Globulin (57.0 kDa) Correct MC

9c11_f16b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldehyde Dehydrogenase (53.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Enolase (42.5 kDa) Correct MC

3179_256f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Collagen (134.0 kDa) Incorrect Catalase (65.5 kDa) Correct Prostate-Specific Antigen (30.0 kDa) Incorrect Actin (43.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

a219_d06b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Ovalbumin (45.0 kDa) Correct Pyruvate Kinase (60.0 kDa) Incorrect MC

e969_f587

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect γ-Globulin (57.0 kDa) Correct Estrogen Binding Protein (115.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect MC

5ae5_426c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Catalase (65.5 kDa) Correct Green Fluorescent Protein (28.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect MC

c93e_af99

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Incorrect Actin (43.0 kDa) Correct MC

9d0f_de52

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Correct Serine Protease (22.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Incorrect MC

eecf_1faf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Myoglobin (18.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect Pepsin (34.5 kDa) Correct Agglutinin (22.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect MC

872d_4129

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Incorrect Cytochrome c (13.0 kDa) Incorrect Myoglobin (18.0 kDa) Correct Ovalbumin (45.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect MC

6fc8_cad0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Heat Shock Protein (70.1 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Ovalbumin (45.0 kDa) Correct MC

3ec8_bb4e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect DNA Ligase (60.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect MC

6e3c_7a4f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Prostate-Specific Antigen (30.0 kDa) Correct Myelin Basic Protein (18.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect MC

133b_e1f3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pepsin (34.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect Lipase (40.0 kDa) Correct MC

dcf1_b6e9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Actin (43.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Correct Transferrin (80.0 kDa) Incorrect MC

aa89_b671

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Green Fluorescent Protein (28.0 kDa) Incorrect Cytochrome c (13.0 kDa) Incorrect Actin (43.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Correct Agglutinin (22.0 kDa) Incorrect MC

7b2b_40a7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

γ-Globulin (57.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Correct MC

a008_3e89

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pepsin (34.5 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Serum Albumin (66.2 kDa) Correct Transferrin (80.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect MC

f906_2717

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serum Albumin (66.2 kDa) Correct Epidermal Growth Factor (40.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect MC

86d4_b299

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Immunoglobulin (145.0 kDa) Correct Serum Albumin (66.2 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect MC

e6f6_75f9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Pepsin (34.5 kDa) Correct γ-Globulin (57.0 kDa) Incorrect Myoglobin (18.0 kDa) Incorrect MC

8573_9843

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Actin (43.0 kDa) Correct Agglutinin (22.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect MC

5341_4093

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serum Albumin (66.2 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Hexokinase (120.0 kDa) Correct Enolase (42.5 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect MC

0c73_380b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Correct Tropomyosin (35.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect MC

8af6_654f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

α-Amylase (61.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect Hexokinase (120.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

6dca_be8e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Horseradish peroxidase (34.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Lactalbumin (13.0 kDa) Correct Actin (43.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect MC

ea29_efa5

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Serine Protease (22.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect MC

e397_b33c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Lipase (40.0 kDa) Incorrect Transferrin (80.0 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect MC

528f_e0a6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Lipase (40.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Correct Serum Albumin (66.2 kDa) Incorrect MC

f599_ddb3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Collagen (134.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect MC

6dca_65bf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect Lactalbumin (13.0 kDa) Correct Prostate-Specific Antigen (30.0 kDa) Incorrect MC

5ff0_8ed3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Epidermal Growth Factor (40.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Correct MC

9e07_dc37

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Immunoglobulin (145.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Correct Lipase (40.0 kDa) Incorrect MC

ad3a_1a50

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect Actin (43.0 kDa) Correct Collagen (134.0 kDa) Incorrect MC

dfea_2349

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Epidermal Growth Factor (40.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect α-Amylase (61.0 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect MC

159d_8212

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Hexokinase (120.0 kDa) Correct Lipase (40.0 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

8dd3_205d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Incorrect α-Amylase (61.0 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

3be5_57d6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Serum Albumin (66.2 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Correct Myelin Basic Protein (18.0 kDa) Incorrect MC

56cb_801a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Actin (43.0 kDa) Correct MC

04f0_ccef

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Fibrinogen (63.5 kDa) Incorrect Aldolase (47.5 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Collagen (134.0 kDa) Correct Transferrin (80.0 kDa) Incorrect MC

f429_f13d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Horseradish peroxidase (34.0 kDa) Incorrect Fibrinogen (63.5 kDa) Correct Transferrin (80.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect MC

7680_eeaf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Myoglobin (18.0 kDa) Incorrect Serum Albumin (66.2 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect Pepsin (34.5 kDa) Correct Serine Protease (22.0 kDa) Incorrect MC

58af_469f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Incorrect Serum Albumin (66.2 kDa) Correct Enolase (42.5 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

d1c7_10c6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Lipase (40.0 kDa) Correct Pepsin (34.5 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Incorrect MC

74a2_a23b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Incorrect Hexokinase (120.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect MC

d7ac_e66b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Fibrinogen (63.5 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Correct Epidermal Growth Factor (40.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

b381_d545

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Correct Collagen (134.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect MC

03f4_9fcd

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Enolase (42.5 kDa) Correct Pyruvate Kinase (60.0 kDa) Incorrect MC

9795_9cbf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serine Protease (22.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect Serum Albumin (66.2 kDa) Incorrect Tropomyosin (35.0 kDa) Correct Myelin Basic Protein (18.0 kDa) Incorrect MC

67c3_bdc6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect Hexokinase (120.0 kDa) Correct Serum Albumin (66.2 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect MC

34ef_85fd

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Horseradish peroxidase (34.0 kDa) Correct Agglutinin (22.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect MC

59c3_959d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Correct Transferrin (80.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Serum Albumin (66.2 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect MC

4913_b68d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect MC

d8d1_15be

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Prostate-Specific Antigen (30.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Correct Enolase (42.5 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Lactalbumin (13.0 kDa) Incorrect MC

bfe1_3956

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

dba1_d884

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Estrogen Binding Protein (115.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Serum Albumin (66.2 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect MC

785f_ff90

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Correct Agglutinin (22.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect MC

b6a2_ef37

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pepsin (34.5 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Fibrinogen (63.5 kDa) Correct Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect MC

4798_0a4e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Myoglobin (18.0 kDa) Incorrect Lactalbumin (13.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Agglutinin (22.0 kDa) Correct MC

6a4e_1542

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Collagen (134.0 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Correct Green Fluorescent Protein (28.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Actin (43.0 kDa) Incorrect MC

1b88_6c52

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Correct Pyruvate Kinase (60.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Lipase (40.0 kDa) Incorrect MC

2f3d_471c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Catalase (65.5 kDa) Correct Prostate-Specific Antigen (30.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect MC

865d_d99d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Pepsin (34.5 kDa) Correct γ-Globulin (57.0 kDa) Incorrect MC

fd93_9e1e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Lipase (40.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Correct Horseradish peroxidase (34.0 kDa) Incorrect MC

690f_ea31

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Immunoglobulin (145.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Correct MC

aae5_026c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serine Protease (22.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect Pepsin (34.5 kDa) Correct Ovalbumin (45.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect MC

8946_991c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Agglutinin (22.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Cytochrome c (13.0 kDa) Correct MC

5490_b20f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Myoglobin (18.0 kDa) Correct Lipase (40.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Lactalbumin (13.0 kDa) Incorrect MC

5369_94f0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Correct Aldehyde Dehydrogenase (53.0 kDa) Incorrect Lipase (40.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Myoglobin (18.0 kDa) Incorrect MC

9c83_4d55

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Correct Catalase (65.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect MC

fa25_474e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Transferrin (80.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect MC

1076_40ef

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Estrogen Binding Protein (115.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Correct Heat Shock Protein (70.1 kDa) Incorrect MC

6fad_77e3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pyruvate Kinase (60.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect MC

5a1b_491e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldehyde Dehydrogenase (53.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Actin (43.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Hexokinase (120.0 kDa) Correct MC

1662_4ca4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Estrogen Binding Protein (115.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect α-Amylase (61.0 kDa) Correct Aldolase (47.5 kDa) Incorrect MC

5627_0d21

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

DNA Ligase (60.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Immunoglobulin (145.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

bcf6_53d8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Immunoglobulin (145.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect Ovalbumin (45.0 kDa) Correct MC

80d2_54ce

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Correct Pepsin (34.5 kDa) Incorrect Aldolase (47.5 kDa) Incorrect Collagen (134.0 kDa) Incorrect MC

271b_5988

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect Ovalbumin (45.0 kDa) Correct MC

e737_d36d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Collagen (134.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Fibrinogen (63.5 kDa) Incorrect Actin (43.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

f297_be96

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Correct MC

5be9_0c55

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Collagen (134.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect Transferrin (80.0 kDa) Correct MC

cdea_7ead

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pyruvate Kinase (60.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Correct MC

494a_76cf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect α-Amylase (61.0 kDa) Correct Hexokinase (120.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect MC

5b38_7073

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Immunoglobulin (145.0 kDa) Correct Transferrin (80.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect MC

9454_30c1

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Epidermal Growth Factor (40.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect MC

1514_844c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect α-Amylase (61.0 kDa) Correct Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect MC

4e2a_09e3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

DNA Ligase (60.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Correct Myoglobin (18.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Actin (43.0 kDa) Incorrect MC

da94_7214

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Lipase (40.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Serum Albumin (66.2 kDa) Correct Transferrin (80.0 kDa) Incorrect MC

a933_e67a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Correct Agglutinin (22.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

c8f8_e003

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Correct α-Amylase (61.0 kDa) Incorrect MC

aeea_d5ff

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Incorrect Serum Albumin (66.2 kDa) Incorrect Transferrin (80.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Hexokinase (120.0 kDa) Correct MC

8044_4e82

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Correct Heat Shock Protein (70.1 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

4953_a2f4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Myelin Basic Protein (18.0 kDa) Incorrect Agglutinin (22.0 kDa) Correct Ovalbumin (45.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Cytochrome c (13.0 kDa) Incorrect MC

45a1_9a11

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Correct Fibrinogen (63.5 kDa) Incorrect Aldolase (47.5 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect MC

8e3b_4494

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect Pepsin (34.5 kDa) Correct Myelin Basic Protein (18.0 kDa) Incorrect MC

0a9e_884d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pepsin (34.5 kDa) Correct Serum Albumin (66.2 kDa) Incorrect Enolase (42.5 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect MC

095c_9f5c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

γ-Globulin (57.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Correct Estrogen Binding Protein (115.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

a863_fe3e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pepsin (34.5 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Fibrinogen (63.5 kDa) Correct Aldolase (47.5 kDa) Incorrect MC

9138_674f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serine Protease (22.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Myoglobin (18.0 kDa) Incorrect Lactalbumin (13.0 kDa) Correct MC

3f8a_c0da

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Actin (43.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Serum Albumin (66.2 kDa) Correct MC

085b_cfc2

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Ovalbumin (45.0 kDa) Correct Transferrin (80.0 kDa) Incorrect MC

b2bb_00fa

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Incorrect Pepsin (34.5 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect MC

93fe_a5cd

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Cytochrome c (13.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Agglutinin (22.0 kDa) Correct MC

67d7_a176

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Collagen (134.0 kDa) Incorrect Catalase (65.5 kDa) Correct MC

f063_65fe

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Incorrect Heat Shock Protein (70.1 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Correct Hexokinase (120.0 kDa) Incorrect MC

dc8e_3907

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Collagen (134.0 kDa) Incorrect Fibrinogen (63.5 kDa) Correct Transferrin (80.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect MC

6304_747b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pepsin (34.5 kDa) Incorrect Fibrinogen (63.5 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect Lipase (40.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

d5b8_584f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect Collagen (134.0 kDa) Correct Ovalbumin (45.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

386b_2af0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Lipase (40.0 kDa) Correct Collagen (134.0 kDa) Incorrect MC

4b60_b29f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

DNA Ligase (60.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect Pepsin (34.5 kDa) Correct Serine Protease (22.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect MC

b289_1314

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

DNA Ligase (60.0 kDa) Incorrect Lipase (40.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Correct Transferrin (80.0 kDa) Incorrect MC

f782_dc95

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Correct γ-Globulin (57.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

b840_d104

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Actin (43.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Cytochrome c (13.0 kDa) Correct Myoglobin (18.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect MC

0d92_9c2d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Lipase (40.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect DNA Ligase (60.0 kDa) Correct MC

ab7a_8ee8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Hexokinase (120.0 kDa) Correct MC

1d5c_ac87

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Myoglobin (18.0 kDa) Incorrect Cytochrome c (13.0 kDa) Incorrect Horseradish peroxidase (34.0 kDa) Incorrect Lipase (40.0 kDa) Incorrect Agglutinin (22.0 kDa) Correct MC

ea3e_956a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect MC

005a_63f6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Correct Immunoglobulin (145.0 kDa) Incorrect MC

3ae7_742c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Myelin Basic Protein (18.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect Enolase (42.5 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Correct Agglutinin (22.0 kDa) Incorrect MC

54d4_a602

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Tropomyosin (35.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect α-Amylase (61.0 kDa) Correct MC

2f76_cc73

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Green Fluorescent Protein (28.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect DNA Ligase (60.0 kDa) Correct MC

57c5_fe80

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Green Fluorescent Protein (28.0 kDa) Correct DNA Ligase (60.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Myoglobin (18.0 kDa) Incorrect Actin (43.0 kDa) Incorrect MC

2bf8_b18f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serum Albumin (66.2 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Enolase (42.5 kDa) Correct Transferrin (80.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect MC

a6e4_4f46

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Correct Serum Albumin (66.2 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect MC

7764_dbed

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Fibrinogen (63.5 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Correct MC

f7f8_83b9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Aldolase (47.5 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Cytochrome c (13.0 kDa) Correct Myelin Basic Protein (18.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect MC

1f35_4b1a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Immunoglobulin (145.0 kDa) Incorrect Catalase (65.5 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect MC

cc7d_9fe8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Prostate-Specific Antigen (30.0 kDa) Incorrect Aldolase (47.5 kDa) Correct Transferrin (80.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect MC

c4b0_701c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Estrogen Binding Protein (115.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Actin (43.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Correct Transferrin (80.0 kDa) Incorrect MC

6a7a_16f1

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Correct MC

91ab_16f4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Incorrect Lipase (40.0 kDa) Correct MC

78b3_4c6a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Cytochrome c (13.0 kDa) Correct Green Fluorescent Protein (28.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Myelin Basic Protein (18.0 kDa) Incorrect MC

82fd_abeb

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Enolase (42.5 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Heat Shock Protein (70.1 kDa) Correct MC

f98f_5629

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serine Protease (22.0 kDa) Incorrect Prostate-Specific Antigen (30.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect Myoglobin (18.0 kDa) Correct Lactalbumin (13.0 kDa) Incorrect MC

b6f5_7233

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect γ-Globulin (57.0 kDa) Incorrect Enolase (42.5 kDa) Correct MC

eb25_259c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Epidermal Growth Factor (40.0 kDa) Incorrect γ-Globulin (57.0 kDa) Correct β-Galactosidase (175.0 kDa) Incorrect Collagen (134.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect MC

e9c3_3105

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Catalase (65.5 kDa) Correct Horseradish peroxidase (34.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Aldolase (47.5 kDa) Incorrect MC

6632_1639

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Serine Protease (22.0 kDa) Incorrect Enolase (42.5 kDa) Incorrect Serum Albumin (66.2 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Correct Myoglobin (18.0 kDa) Incorrect MC

b4a0_60af

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

α-Amylase (61.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Correct MC

f5a0_bee2

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Correct Green Fluorescent Protein (28.0 kDa) Incorrect Hexokinase (120.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Incorrect MC

b50d_27ad

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

β-Galactosidase (175.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Catalase (65.5 kDa) Incorrect Collagen (134.0 kDa) Correct Aldolase (47.5 kDa) Incorrect MC

9282_be67

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Pyruvate Kinase (60.0 kDa) Incorrect Tropomyosin (35.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect Lipase (40.0 kDa) Correct MC

9fab_de52

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Lipase (40.0 kDa) Correct Prostate-Specific Antigen (30.0 kDa) Incorrect α-Amylase (61.0 kDa) Incorrect Agglutinin (22.0 kDa) Incorrect MC

71e2_aedc

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Hexokinase (120.0 kDa) Correct Lipase (40.0 kDa) Incorrect Serum Albumin (66.2 kDa) Incorrect MC

f848_3f02

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Immunoglobulin (145.0 kDa) Incorrect Ovalbumin (45.0 kDa) Incorrect Serum Albumin (66.2 kDa) Correct Horseradish peroxidase (34.0 kDa) Incorrect MC

8a12_50b5

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Green Fluorescent Protein (28.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Epidermal Growth Factor (40.0 kDa) Correct α-Amylase (61.0 kDa) Incorrect MC

3624_4a1e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for a typical amount of time.

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Actin (43.0 kDa) Correct Heat Shock Protein (70.1 kDa) Incorrect MC

1511_04e8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Transferrin (80.0 kDa) Incorrect Serine Protease (22.0 kDa) Incorrect DNA Ligase (60.0 kDa) Incorrect Lipase (40.0 kDa) Correct Tropomyosin (35.0 kDa) Incorrect MC

ef75_943d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Green Fluorescent Protein (28.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect Transferrin (80.0 kDa) Incorrect Aldehyde Dehydrogenase (53.0 kDa) Correct MC

98da_391e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too short a time (bands are compressed near the top).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Ovalbumin (45.0 kDa) Incorrect Myoglobin (18.0 kDa) Incorrect Pepsin (34.5 kDa) Incorrect Agglutinin (22.0 kDa) Correct Lactalbumin (13.0 kDa) Incorrect MC

0917_d692

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder.

Lane 2 contains a single band labeled Protein X17.

The gel was run for too long a time (some small bands may run off the bottom).

Standard ladder reference (kDa):

– 250
– 150
– 100
– 75
– 50
– 37
– 25
– 20
– 15
– 10

Gel results:

Lane 1
Lane 2

Which protein (name and molecular weight) best matches Protein X17?

Use the ladder to estimate the band size. You do not need outside knowledge about the proteins.

Pyruvate Kinase (60.0 kDa) Incorrect Actin (43.0 kDa) Correct Transferrin (80.0 kDa) Incorrect β-Galactosidase (175.0 kDa) Incorrect Estrogen Binding Protein (115.0 kDa) Incorrect