712c_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Lactalbumin (Lac)	4.3	13.0

The protein in the table (above) is placed in a buffer solution with a pH of 3.0.

What is the correct net charge on the Lac protein at pH of 3.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

1c74_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Chymotrypsin (Chy)	8.4	25.0

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the Chy protein at pH of 9.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

9f1d_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Salmine (Sal)	12.1	3.0

The protein in the table (above) is placed in a buffer solution with a pH of 11.0.

What is the correct net charge on the Sal protein at pH of 11.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

137e_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Ovalbumin (Ova)	4.6	45.0

The protein in the table (above) is placed in a buffer solution with a pH of 3.5.

What is the correct net charge on the Ova protein at pH of 3.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

8a65_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Hexokinase (Hex)	5.8	120.0

The protein in the table (above) is placed in a buffer solution with a pH of 7.0.

What is the correct net charge on the Hex protein at pH of 7.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

b4e4_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Aldehyde Dehydrogenase (Alde)	5.3	53.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.0.

What is the correct net charge on the Alde protein at pH of 4.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

09bc_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Xylosidase (Xyl)	5.0	100.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Xyl protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

949e_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Sucrase (Suc)	6.5	51.0

The protein in the table (above) is placed in a buffer solution with a pH of 7.5.

What is the correct net charge on the Suc protein at pH of 7.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

3d3f_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
α-Amylase (Amy)	5.9	61.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.5.

What is the correct net charge on the Amy protein at pH of 4.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

58b4_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Histone (His)	10.8	15.0

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the His protein at pH of 9.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

6c0b_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
SARS-CoV-2 Spike Protein (CoV)	6.2	149.9

The protein in the table (above) is placed in a buffer solution with a pH of 7.5.

What is the correct net charge on the CoV protein at pH of 7.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

9e86_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Phospholypase (Pho)	10.5	19.5

The protein in the table (above) is placed in a buffer solution with a pH of 11.5.

What is the correct net charge on the Pho protein at pH of 11.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

a96d_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Avidin (Av)	10.5	16.9

The protein in the table (above) is placed in a buffer solution with a pH of 11.5.

What is the correct net charge on the Av protein at pH of 11.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

9864_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Cobra Venom Factor (CVF)	5.2	149.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.5.

What is the correct net charge on the CVF protein at pH of 6.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

6ad6_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Insulin (Ins)	5.4	5.8

The protein in the table (above) is placed in a buffer solution with a pH of 4.0.

What is the correct net charge on the Ins protein at pH of 4.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

8171_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Trypsin (Tryp)	10.8	23.5

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the Tryp protein at pH of 9.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

d569_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Tropomyosin (Trop)	5.1	35.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.5.

What is the correct net charge on the Trop protein at pH of 6.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

7aea_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Heat Shock Protein (HSP)	5.5	70.1

The protein in the table (above) is placed in a buffer solution with a pH of 4.5.

What is the correct net charge on the HSP protein at pH of 4.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

1bd2_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Cytochrome c (Cyt)	10.2	13.0

The protein in the table (above) is placed in a buffer solution with a pH of 9.0.

What is the correct net charge on the Cyt protein at pH of 9.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

0449_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Transferrin (Tran)	5.9	80.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.5.

What is the correct net charge on the Tran protein at pH of 4.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

da53_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
α-Amylase (Amy)	5.9	61.0

The protein in the table (above) is placed in a buffer solution with a pH of 7.0.

What is the correct net charge on the Amy protein at pH of 7.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

7e99_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Prostate-Specific Antigen (PSA)	6.4	30.0

The protein in the table (above) is placed in a buffer solution with a pH of 7.5.

What is the correct net charge on the PSA protein at pH of 7.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

4cc2_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Fumerase (Fum)	7.6	48.5

The protein in the table (above) is placed in a buffer solution with a pH of 6.5.

What is the correct net charge on the Fum protein at pH of 6.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

db01_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Luciferase (Luc)	5.7	50.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.5.

What is the correct net charge on the Luc protein at pH of 4.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

3739_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Lipase (Lip)	4.7	40.0

The protein in the table (above) is placed in a buffer solution with a pH of 3.5.

What is the correct net charge on the Lip protein at pH of 3.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

10fb_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Elastase II (Ela)	8.5	26.5

The protein in the table (above) is placed in a buffer solution with a pH of 7.5.

What is the correct net charge on the Ela protein at pH of 7.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

5ab0_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Ovalbumin (Ova)	4.6	45.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Ova protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

f813_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Collagen (Col)	6.6	134.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.5.

What is the correct net charge on the Col protein at pH of 5.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

224e_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Aprotinin (Apr)	9.2	6.5

The protein in the table (above) is placed in a buffer solution with a pH of 8.0.

What is the correct net charge on the Apr protein at pH of 8.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

e219_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Streptavidin (Stp)	6.0	13.2

The protein in the table (above) is placed in a buffer solution with a pH of 7.0.

What is the correct net charge on the Stp protein at pH of 7.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

5c6a_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Catalase (Cat)	6.7	65.5

The protein in the table (above) is placed in a buffer solution with a pH of 5.5.

What is the correct net charge on the Cat protein at pH of 5.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

180e_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
G3P Dehydrogenase (GDH)	8.3	36.0

The protein in the table (above) is placed in a buffer solution with a pH of 7.0.

What is the correct net charge on the GDH protein at pH of 7.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

8b34_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Casein (Cas)	4.9	24.0

The protein in the table (above) is placed in a buffer solution with a pH of 3.5.

What is the correct net charge on the Cas protein at pH of 3.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

2828_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Actin (Act)	5.3	43.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.0.

What is the correct net charge on the Act protein at pH of 4.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

bdd8_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Cobra Venom Factor (CVF)	5.2	149.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.0.

What is the correct net charge on the CVF protein at pH of 4.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

0f32_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Lysozyme (Lys)	11.0	14.4

The protein in the table (above) is placed in a buffer solution with a pH of 10.0.

What is the correct net charge on the Lys protein at pH of 10.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

1983_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Aprotinin (Apr)	9.2	6.5

The protein in the table (above) is placed in a buffer solution with a pH of 10.5.

What is the correct net charge on the Apr protein at pH of 10.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

6d09_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Hexokinase (Hex)	5.8	120.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.5.

What is the correct net charge on the Hex protein at pH of 4.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

39d1_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Immunoglobulin (IgG)	7.3	145.0

The protein in the table (above) is placed in a buffer solution with a pH of 8.5.

What is the correct net charge on the IgG protein at pH of 8.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

4f6a_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Insulin (Ins)	5.4	5.8

The protein in the table (above) is placed in a buffer solution with a pH of 6.5.

What is the correct net charge on the Ins protein at pH of 6.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

a491_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Cytochrome c (Cyt)	10.2	13.0

The protein in the table (above) is placed in a buffer solution with a pH of 11.5.

What is the correct net charge on the Cyt protein at pH of 11.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

55d1_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Enolase (Eno)	8.4	42.5

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the Eno protein at pH of 9.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

bdae_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Horseradish peroxidase (HP)	9.0	34.0

The protein in the table (above) is placed in a buffer solution with a pH of 8.0.

What is the correct net charge on the HP protein at pH of 8.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

7ae7_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
DNA Ligase (Lig)	6.0	60.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.0.

What is the correct net charge on the Lig protein at pH of 5.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

011f_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Sucrase (Suc)	6.5	51.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.5.

What is the correct net charge on the Suc protein at pH of 5.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

1cfd_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Pyruvate Kinase (PK)	5.6	60.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.5.

What is the correct net charge on the PK protein at pH of 4.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

b63a_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Ribonuclease A (RibA)	9.3	13.7

The protein in the table (above) is placed in a buffer solution with a pH of 8.0.

What is the correct net charge on the RibA protein at pH of 8.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

ab57_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Hemoglobin (Hem)	7.1	16.7

The protein in the table (above) is placed in a buffer solution with a pH of 8.5.

What is the correct net charge on the Hem protein at pH of 8.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

6eb2_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Succinate Ligase (SL)	6.6	20.9

The protein in the table (above) is placed in a buffer solution with a pH of 8.0.

What is the correct net charge on the SL protein at pH of 8.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

9f16_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Epidermal Growth Factor (EGF)	4.5	40.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.5.

What is the correct net charge on the EGF protein at pH of 5.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

7798_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Streptavidin (Stp)	6.0	13.2

The protein in the table (above) is placed in a buffer solution with a pH of 5.0.

What is the correct net charge on the Stp protein at pH of 5.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

f10a_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Agglutinin (Agg)	4.8	22.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Agg protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

c81f_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Elastase II (Ela)	8.5	26.5

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the Ela protein at pH of 9.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

0d94_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Actin (Act)	5.3	43.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.5.

What is the correct net charge on the Act protein at pH of 6.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

ab27_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Urease A (Ure)	4.9	26.5

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Ure protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

3c6d_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Luciferase (Luc)	5.7	50.0

The protein in the table (above) is placed in a buffer solution with a pH of 7.0.

What is the correct net charge on the Luc protein at pH of 7.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

5108_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Immunoglobulin (IgG)	7.3	145.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the IgG protein at pH of 6.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

1dc6_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Aldolase (Aldo)	8.5	47.5

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the Aldo protein at pH of 9.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

64cd_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Fibrinogen (Fib)	5.8	63.5

The protein in the table (above) is placed in a buffer solution with a pH of 4.5.

What is the correct net charge on the Fib protein at pH of 4.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

199e_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Serine Protease (Ser)	4.1	22.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.5.

What is the correct net charge on the Ser protein at pH of 5.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

f9da_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Myelin Basic Protein (MBP)	9.5	18.0

The protein in the table (above) is placed in a buffer solution with a pH of 10.5.

What is the correct net charge on the MBP protein at pH of 10.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

7ef7_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Lipase (Lip)	4.7	40.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Lip protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

0a90_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Estrogen Binding Protein (EBP)	4.9	115.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the EBP protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

83a1_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Fibrinogen (Fib)	5.8	63.5

The protein in the table (above) is placed in a buffer solution with a pH of 7.0.

What is the correct net charge on the Fib protein at pH of 7.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

a799_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
β-Galactosidase (Gal)	4.6	175.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Gal protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

584c_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Ferritin (Fer)	5.5	19.8

The protein in the table (above) is placed in a buffer solution with a pH of 4.5.

What is the correct net charge on the Fer protein at pH of 4.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

70d7_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
G3P Dehydrogenase (GDH)	8.3	36.0

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the GDH protein at pH of 9.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

2029_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Transferrin (Tran)	5.9	80.0

The protein in the table (above) is placed in a buffer solution with a pH of 7.0.

What is the correct net charge on the Tran protein at pH of 7.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

332f_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
γ-Globulin (Glob)	6.6	57.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.5.

What is the correct net charge on the Glob protein at pH of 5.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

6bf5_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Myoglobin (Myo)	7.0	18.0

The protein in the table (above) is placed in a buffer solution with a pH of 8.0.

What is the correct net charge on the Myo protein at pH of 8.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

8788_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Aldehyde Dehydrogenase (Alde)	5.3	53.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.5.

What is the correct net charge on the Alde protein at pH of 6.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

0701_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Serine Protease (Ser)	4.1	22.0

The protein in the table (above) is placed in a buffer solution with a pH of 3.0.

What is the correct net charge on the Ser protein at pH of 3.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

1856_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Phospholypase (Pho)	10.5	19.5

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the Pho protein at pH of 9.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

19dd_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Avidin (Av)	10.5	16.9

The protein in the table (above) is placed in a buffer solution with a pH of 9.5.

What is the correct net charge on the Av protein at pH of 9.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

5b25_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Prostate-Specific Antigen (PSA)	6.4	30.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.0.

What is the correct net charge on the PSA protein at pH of 5.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

c38e_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Hemoglobin (Hem)	7.1	16.7

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Hem protein at pH of 6.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

ef6b_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Heat Shock Protein (HSP)	5.5	70.1

The protein in the table (above) is placed in a buffer solution with a pH of 6.5.

What is the correct net charge on the HSP protein at pH of 6.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

3ab9_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Ribonuclease A (RibA)	9.3	13.7

The protein in the table (above) is placed in a buffer solution with a pH of 10.5.

What is the correct net charge on the RibA protein at pH of 10.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

435e_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Estrogen Binding Protein (EBP)	4.9	115.0

The protein in the table (above) is placed in a buffer solution with a pH of 3.5.

What is the correct net charge on the EBP protein at pH of 3.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

6fb3_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Lactalbumin (Lac)	4.3	13.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.5.

What is the correct net charge on the Lac protein at pH of 5.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

9c3d_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Xylosidase (Xyl)	5.0	100.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.0.

What is the correct net charge on the Xyl protein at pH of 4.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

74ad_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Chymotrypsin (Chy)	8.4	25.0

The protein in the table (above) is placed in a buffer solution with a pH of 7.0.

What is the correct net charge on the Chy protein at pH of 7.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

ee57_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
β-Galactosidase (Gal)	4.6	175.0

The protein in the table (above) is placed in a buffer solution with a pH of 3.5.

What is the correct net charge on the Gal protein at pH of 3.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

d7e9_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Serum Albumin (Alb)	4.9	66.2

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Alb protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

e605_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Tropomyosin (Trop)	5.1	35.0

The protein in the table (above) is placed in a buffer solution with a pH of 4.0.

What is the correct net charge on the Trop protein at pH of 4.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

49b7_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
SARS-CoV-2 Spike Protein (CoV)	6.2	149.9

The protein in the table (above) is placed in a buffer solution with a pH of 5.0.

What is the correct net charge on the CoV protein at pH of 5.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

5ca2_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Green Fluorescent Protein (GFP)	6.2	28.0

The protein in the table (above) is placed in a buffer solution with a pH of 5.0.

What is the correct net charge on the GFP protein at pH of 5.0

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

63e2_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Catalase (Cat)	6.7	65.5

The protein in the table (above) is placed in a buffer solution with a pH of 8.0.

What is the correct net charge on the Cat protein at pH of 8.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

cb69_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Myelin Basic Protein (MBP)	9.5	18.0

The protein in the table (above) is placed in a buffer solution with a pH of 8.5.

What is the correct net charge on the MBP protein at pH of 8.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

e6cb_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Fumerase (Fum)	7.6	48.5

The protein in the table (above) is placed in a buffer solution with a pH of 9.0.

What is the correct net charge on the Fum protein at pH of 9.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

ff24_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Leghemoglobin (Leg)	4.7	16.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Leg protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

cdcd_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Ferritin (Fer)	5.5	19.8

The protein in the table (above) is placed in a buffer solution with a pH of 6.5.

What is the correct net charge on the Fer protein at pH of 6.5

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

16dd_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Horseradish peroxidase (HP)	9.0	34.0

The protein in the table (above) is placed in a buffer solution with a pH of 10.0.

What is the correct net charge on the HP protein at pH of 10.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

dd07_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
γ-Globulin (Glob)	6.6	57.0

The protein in the table (above) is placed in a buffer solution with a pH of 8.0.

What is the correct net charge on the Glob protein at pH of 8.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

c2fa_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Casein (Cas)	4.9	24.0

The protein in the table (above) is placed in a buffer solution with a pH of 6.0.

What is the correct net charge on the Cas protein at pH of 6.0

? The protein will have a net positive (+) charge. Incorrect The protein will have a net negative (–) charge. Correct The protein will have a net neutral (0) charge. Incorrect MC

b6ea_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Leghemoglobin (Leg)	4.7	16.0

The protein in the table (above) is placed in a buffer solution with a pH of 3.5.

What is the correct net charge on the Leg protein at pH of 3.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect MC

fbff_36d4

Isoelectric Point Problem

Protein Name	isoelectric point (pI)	molecular weight
Succinate Ligase (SL)	6.6	20.9

The protein in the table (above) is placed in a buffer solution with a pH of 5.5.

What is the correct net charge on the SL protein at pH of 5.5

? The protein will have a net positive (+) charge. Correct The protein will have a net negative (–) charge. Incorrect The protein will have a net neutral (0) charge. Incorrect