C785 WGU TEST -BIOCHEMISTRY |ACTUAL QUESTIONS AND VERIFIED ANSWERS |BRAND NEW UPDATE|GRADED A+

C785 WGU TEST -BIOCHEMISTRY |ACTUAL
QUESTIONS AND VERIFIED ANSWERS |BRAND
NEW 2026-2027 UPDATE|GRADED A+


Question 1

Which of the following amino acids has a net negative charge at physiologic pH (~7.4)?

A) Glutamic Acid

B)Histidine

C)Lysine

D)Asparagine
CORRECT ANSWER

A) Glutamic Acid




Question 2

A polypeptide with a net positive charge at physiologic pH (~7.4) most likely contains
amino acids with R groups of what type?



A)Acidic R groups

B)Aromatic R groups

C)Aliphatic R groups

D)Basic R groups

CORRECT ANSWER

D)Basic R groups




Question 3



1

, The amino acids in hemoglobin (or any protein) uniformly have which of the following
configurations?

-L

-R

-S

-D

CORRECT ANSWER

L configuration




Question 4

Which of the following properties of a protein is least likely to be affected by changes in
pH?

-Tertiary structure

-Primary structure

-Secondary structure

-Net charge

CORRECT ANSWER

Primary structure




Question 5

The unique cyclic structure of which of the following amino acids plays a central role in the
formation of alpha helices and beta sheets?

-Proline

-Arginine

-Valine

-Lysine



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