NUM

cbc3_45ae

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

199.65000000 19.96500092 NUM

f343_adc5

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

16.96600000 1.69656598 NUM

1264_e56d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

178.47400000 17.84744867 NUM

4527_ca16

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

91.45500000 9.14545960 NUM

e385_7088

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

45.02700000 4.50272466 NUM

8097_ba17

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

17.70200000 1.77021873 NUM

08bb_06bc

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

42.62100000 4.26208377 NUM

f2aa_8b07

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

30.88700000 3.08871430 NUM

1a1c_a8db

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

59.90800000 5.99081082 NUM

ef4c_834c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

205.79300000 20.57931667 NUM

4a2f_2df1

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

86.52400000 8.65238399 NUM

750b_440e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.24500000 1.12452211 NUM

a055_5fda

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

41.22400000 4.12236629 NUM

09a5_96fa

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

180.39400000 18.03939835 NUM

19c6_8af5

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

81.17900000 8.11791772 NUM

4716_7600

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

82.26100000 8.22608439 NUM

8b0c_47ca

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

180.90900000 18.09090984 NUM

02a7_cb9f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

22.76700000 2.27671622 NUM

3a6d_41a8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

22.25300000 2.22533509 NUM

6921_675a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

45.68100000 4.56813934 NUM

950a_ea6c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

31.21300000 3.12134461 NUM

1314_bd5d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

21.17900000 2.11788096 NUM

08e1_4a5c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

39.91100000 3.99111857 NUM

f827_e3f9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

29.59700000 2.95965839 NUM

c727_7b8f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

61.85400000 6.18538115 NUM

7fbb_afef

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

56.49700000 5.64971970 NUM

7b8f_cfe7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

191.68800000 19.16875850 NUM

6da8_30d6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

12.99400000 1.29942696 NUM

b8c8_e3fc

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

12.89900000 1.28992678 NUM

8d03_8e91

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

43.53100000 4.35308064 NUM

a155_96fa

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

179.66200000 17.96620515 NUM

2d47_0866

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

57.83000000 5.78298555 NUM

5580_2701

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

28.78100000 2.87805768 NUM

36a4_32c9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

29.66900000 2.96694306 NUM

a7ab_9138

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

129.53800000 12.95380332 NUM

c3e7_fa32

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

43.14100000 4.31407120 NUM

99a4_7e19

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

12.52600000 1.25262653 NUM

7184_16e2

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

30.52900000 3.05287572 NUM

fcfe_6f5a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

173.14600000 17.31464333 NUM

6aaf_d451

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

89.63600000 8.96358594 NUM

9d65_e1e6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

13.07000000 1.30702907 NUM

bf90_9545

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

13.46000000 1.34601783 NUM

b599_87f7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

64.24300000 6.42434909 NUM

e4f5_7088

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

45.02900000 4.50286092 NUM

005a_1f09

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.77500000 1.17751555 NUM

7296_25e8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

16.28400000 1.62836900 NUM

67d4_c05e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

41.97300000 4.19730491 NUM

9fa9_4a5c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

39.92800000 3.99279938 NUM

08f2_582d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

31.01000000 3.10101712 NUM

554a_08a5

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

28.61400000 2.86135472 NUM

f56a_1fcf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

55.85800000 5.58575194 NUM

a560_28df

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

88.07300000 8.80734756 NUM

c9ed_b30a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

32.55500000 3.25550965 NUM

7d5c_6bd4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

28.45200000 2.84521114 NUM

063b_af29

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

12.40100000 1.24008772 NUM

dbaa_cfe7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

191.56400000 19.15643961 NUM

d856_e259

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

183.58400000 18.35836677 NUM

9950_30ad

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.64600000 1.16460210 NUM

727d_a9b8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

174.60800000 17.46082324 NUM

2f49_30d6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

13.04900000 1.30487040 NUM

9c34_c985

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

23.00600000 2.30058397 NUM

c29d_79eb

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

59.81300000 5.98125297 NUM

a519_7a64

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

120.30300000 12.03027191 NUM

413e_ceb4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

17.33200000 1.73315377 NUM

b090_527c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

207.06600000 20.70656806 NUM

c4bf_d195

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

23.25000000 2.32500167 NUM

6e6c_1ae4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

60.15500000 6.01549933 NUM

60b2_6810

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

215.52800000 21.55280153 NUM

3479_bcaf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

90.91200000 9.09120213 NUM

78a8_953e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.33800000 1.13384074 NUM

8a15_0d4d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

62.26800000 6.22676589 NUM

c7d6_6a74

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

197.41700000 19.74172662 NUM

583c_2c8e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

31.39400000 3.13941275 NUM

919c_bd13

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

58.56600000 5.85655419 NUM

d30c_45ae

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

199.63400000 19.96337898 NUM

f7ab_4d9e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

32.94500000 3.29450768 NUM

8b75_8eea

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

41.25600000 4.12558317 NUM

9ed8_323a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

16.44300000 1.64433060 NUM

d6b1_8c7d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

46.12800000 4.61282945 NUM

cb7d_567a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

22.37500000 2.23750277 NUM

566d_675a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

45.71900000 4.57188224 NUM

a17f_cd83

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

212.80700000 21.28065935 NUM

5437_c825

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

121.70000000 12.16999956 NUM

46a5_0cf4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

91.32300000 9.13225962 NUM

83b0_92b2

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

63.70100000 6.37014678 NUM

3872_f232

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

114.96000000 11.49604506 NUM

0e7d_7a64

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

119.93700000 11.99367972 NUM

b7bf_f828

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

42.87200000 4.28721656 NUM

d812_bcaf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

90.89000000 9.08897723 NUM

269c_e40e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

59.42200000 5.94217487 NUM

3925_12b3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

89.03700000 8.90370825 NUM

02d9_82ec

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.36800000 1.13683766 NUM

6d5c_43f9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

61.03500000 6.10348034 NUM

76a6_1aaf

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

22.85300000 2.28526318 NUM

52f4_dc06

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

60.43200000 6.04315431 NUM

5540_9bd4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

44.02200000 4.40224811 NUM

dc1b_3369

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

184.84100000 18.48412737 NUM

23e1_277f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.08400000 1.10841561 NUM

05de_9943

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

43.22700000 4.32267358 NUM

9435_e19d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.73500000 1.17353597 NUM

985d_0ec7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

124.28500000 12.42853098 NUM

c8c5_0aba

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

12.08900000 1.20886316 NUM

692c_9287

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

18.50900000 1.85085559 NUM

d873_6c6d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

21.27500000 2.12752066 NUM

7cc6_90d3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

60.93600000 6.09355943 NUM

baf8_3cab

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

41.06800000 4.10681224 NUM

0927_320a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

56.92800000 5.69277242 NUM

3844_95b3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

17.93300000 1.79333351 NUM

499e_0130

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

30.20500000 3.02045683 NUM

ac84_e5e0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

112.18500000 11.21851385 NUM

229e_a5a7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

85.03300000 8.50333876 NUM

1f2c_ef81

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

40.83700000 4.08366003 NUM

ee16_30ad

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.61900000 1.16191608 NUM

2e1b_e56d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

178.07800000 17.80782129 NUM

a107_7292

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

44.75700000 4.47566395 NUM

4db2_aaf4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

23.25200000 2.32517888 NUM

47c3_4efb

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

83.99800000 8.39975772 NUM

87a1_3b5c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

31.26300000 3.12634321 NUM

1ad5_3eb1

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

40.91300000 4.09125902 NUM

11e2_bb44

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

196.47400000 19.64740454 NUM

a2a6_7264

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

40.41700000 4.04165950 NUM

4b20_a91c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

92.99800000 9.29982084 NUM

6cd7_8297

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

13.20900000 1.32090414 NUM

ff07_cc5d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

29.82000000 2.98202286 NUM

f9f1_06c7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

40.01300000 4.00127920 NUM

6ceb_06c7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

40.02800000 4.00282585 NUM

bc33_0905

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

193.56000000 19.35602860 NUM

fb19_18ce

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

21.67900000 2.16785911 NUM

45c4_b20e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

87.06400000 8.70639260 NUM

4b32_c65b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

83.92400000 8.39243983 NUM

38c1_30ad

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

11.63800000 1.16376721 NUM

c456_567a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

22.42100000 2.24211484 NUM

799f_e43b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

22.63900000 2.26388535 NUM

576d_e19d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

11.74200000 1.17422788 NUM

7b41_905e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

66.34700000 6.63465520 NUM

b42e_f631

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

28.89000000 2.88895243 NUM

a208_567a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

22.35700000 2.23568965 NUM

bb75_8eea

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

41.26200000 4.12615389 NUM

ba53_1bf9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

176.55000000 17.65495128 NUM

5a27_0aba

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

12.13300000 1.21327323 NUM

50e3_f7ef

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

201.59300000 20.15933030 NUM

5a20_6b27

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

17.59600000 1.75964134 NUM

f76e_9dd1

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

85.90300000 8.59034167 NUM

0f8b_4873

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

43.30500000 4.33053631 NUM

cd91_807b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

16.61700000 1.66169573 NUM

53ba_1880

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

58.30300000 5.83032644 NUM

3d11_b8fb

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

12.33400000 1.23338987 NUM

faa3_57f3

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

91.88100000 9.18809173 NUM

1b40_f631

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

28.85500000 2.88545961 NUM

79c6_bd13

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

58.57000000 5.85702741 NUM

e2b5_8337

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

219.76600000 21.97660615 NUM

c5b3_24bb

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

182.16000000 18.21600595 NUM

4cf7_6fd7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

118.71400000 11.87136263 NUM

9ca3_564f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

59.55200000 5.95520475 NUM

b080_4008

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

130.77000000 13.07695975 NUM

c583_6d9f

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

90.79700000 9.07974613 NUM

9ba2_c9fe

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

21.56200000 2.15621540 NUM

a500_6bd4

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

28.45900000 2.84585187 NUM

8f35_4212

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

128.85100000 12.88512700 NUM

c7a2_3e47

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

44.51900000 4.45188570 NUM

3c27_c43a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

80.67500000 8.06753262 NUM

3faf_e4fd

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

66.68600000 6.66857601 NUM

3944_82ec

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

11.38400000 1.13837235 NUM

d49f_e1e6

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

13.05000000 1.30503691 NUM

5928_9287

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

18.50200000 1.85017441 NUM

340b_9138

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

129.55200000 12.95516393 NUM

0ec0_527c

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

206.99700000 20.69969682 NUM

1c21_3cd0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

43.68800000 4.36881041 NUM

642b_768d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

84.91800000 8.49184698 NUM

1fc6_41a8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

22.34300000 2.23434245 NUM

41ca_7e19

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

12.54900000 1.25487414 NUM

c57c_7dd8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

209.23500000 20.92346933 NUM

1ffd_f3e9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

22.07600000 2.20762903 NUM

51ab_9545

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

13.50200000 1.35022513 NUM

1757_32c9

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

29.67500000 2.96746193 NUM

3abc_cd83

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

213.12300000 21.31230406 NUM

80e6_c9fe

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

21.63400000 2.16344874 NUM

b580_e5e0

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

111.82900000 11.18293076 NUM

f13c_56c7

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

64.26700000 6.42672681 NUM

e426_3eb1

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

40.86200000 4.08618937 NUM

1447_41a8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

22.32900000 2.23287939 NUM

6792_440e

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

11.19100000 1.11906416 NUM

d5c3_34ab

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

134.57600000 13.45756996 NUM

8fa7_65cd

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

42.54900000 4.25492395 NUM

e977_6cab

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

65.15000000 6.51502500 NUM

1f45_350b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

22.71300000 2.27130963 NUM

ee9f_ab54

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

120.61700000 12.06165594 NUM

39c7_042b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

45.36000000 4.53595806 NUM

b39e_f4d8

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

16.22900000 1.62288234 NUM

806c_9143

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

115.61800000 11.56182460 NUM

bccf_675a

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

45.68500000 4.56848902 NUM

7545_f232

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

115.09300000 11.50926955 NUM

57e9_2cf5

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

33.16300000 3.31632287 NUM

78d2_fa49

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

41.74200000 4.17423359 NUM

cb6c_8eea

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

41.27900000 4.12794653 NUM

5f2f_2b79

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

41.64800000 4.16476341 NUM

30aa_dc7d

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 10% of the correct number to be correct.

62.22700000 6.22269447 NUM

f9e8_e59b

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

134.11100000 13.41110699 NUM

7d4d_f828

Below is a simulated SDS–PAGE gel.

Lane 1 contains a Kaleidoscope-style pre-stained protein ladder. Lane 2 contains a single protein band.

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

What is the molecular weight (kDa) of the band in lane 2?

Assume ln(MW) is approximately linear with migration distance.

Note: answers need to be within 11% of the correct number to be correct.

42.92100000 4.29213580