WGU BIOCHEMISTRY OA

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WGU BIOCHEMISTRY OA

(2025-2027 LATEST) VERIFIED ANSWERS


• What is the complementary sequence to 3’ ATG CGA ATA 5’? *
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3’ TAT TCG CAT 5’

3’ TAC GCT TAT 5’
3’ GAT AGC ATA 5’
5’ ATA AGC GTA 3’
Feedback
The correct answer is 3' TAT TCG CAT 5'. Remember complementary means “Matching or Pairing”
You have to remember to pay attention to your numbers as well as your letters (A-T, G-C, 5'-3'). The
correct answer is
3’ ATG CGA ATA 5’ (original sequence)
5’ TAC GCT TAT 3’ (complementary sequence)
But we asked for it in the 3’ direction, so mirror answer to give correct answer:
3’ TAT TCG CAT 5’



• Which pair of amino acids below could bond together to stabilize
the tertiary structure of a protein? *
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Option 1

,2



Option 2

,3


Option 3




Option 4

Correct answer
Option 3
Feedback
C is the correct answer


• If arginine is mutated to leucine within a protein, how would the
structure of the protein be affected? *
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, 4


Ionic bonds will continue to form, allowing the protein to fold as normal.
Hydrophobic interactions will continue to occur resulting in normal folding.
Ionic bonds will no longer form, potentially causing the protein to misfold.

Hydrophobic interactions will be broken, potentially causing aggregation.
Feedback
The correct answer is C an ionic bond will not form between two charged amino acids, leading to a
misfolded protein.

• Which amino acid sequence would result from this Coding DNA
strand? 3’ ATG CAG ATA 5’? *
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Tyr Val Tyr
Ile Gln Ile
Ile Asp Val

Leu His Lys