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WGU C785 OA Biochem Final Exam – Q’s & A’s
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WGU C785 OA Biochem Final Exam – Q’s & A’s
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WGU C785 OA Biochem Final Exam – Q’s & A’sWhat is the complementary sequence to 3' ATG CGA ATA 5'
A: 3' TAT TCG CAT 5'
B: 3' TAC GCT TAT 5'
C: 3' GAT AGC ATA 5'
D: 5' ATA AGC GTA 3' ✔️Ans - A: 3' TAT TCG CAT 5'
Which amino acid sequence would result from this Coding DNA strand? 3'
ATG CAG ATA 5'
A: Tyr Val Tyr
B: Ile Gln Ile
C: Ile Asp Val
D: Leu His Lys ✔️Ans - C: Ile Asp Val
Which amino acid sequence would be made from this template DNA strand? 5'
TAT TAC CGA 3'
A: Tyr Tyr Arg
B: Ile Met Ala
C: Ser Val Ile
D: Ser His Gln ✔️Ans - C: Ser Val Ile
Which of the following are the correct components for a PCR reaction?
A: dNTPs, Primer, RNA Polymerase, template RNA
B: dNTPs, Primer, DNA Polymerase, template DNA
C: ATP, Primer, mRNA polymerase, template mRNA
D: Acetyl CoA, RNA primer, DNA ligase, template phosphate ✔️Ans - B:
dNTPs, Primer, DNA, Polymerase, template DNA
Assuming 100% reaction efficiency, how many DNA copies will be produced
after 5 PCR cycles, if we begin with 1 DNA template?
A: 16
B: 32
, C: 64
D: 10 ✔️Ans - B: 32
2x2x2x2x2= 32
Which of the following would represent a silent mutation if this is the original
sequence: 5' AUG GUA ACA 3' ?
A: 5' AUC GGA ACA 3'
B: 5' AUA GUA ACA 3'
C: 5' AUG GUA ACA 3'
D: 5' AUC GCA ACA 3' ✔️Ans - B: 5' AUA GUA ACA 3'
If the original coding sequence is 5' CGA TAC TTC AGA 3' and it is mutated to
5' CGA TAT TTC AGA 3', what type of mutation would have taken place?
A: Silent
B: Missense
C: Nonsense
D: Insertion ✔️Ans - A: Silent Mutation
If you had a mother who is homozygous for a recessive disease, and a father
who is a heterozygous carrier, what percentage of childern will have the
disease?
A: 25%
B: 50%
C: 75%
D: 100% ✔️Ans - B: 50%
Which of the following describes an epigenetic change?
A: Denaturation of template DNA to faciliate primer annealing.
B: Increase methylation of the promoter region of a tumor suppressor gene in
a developing fetus.
C: Thymine dimer formation resulting from UV radiation.
D: Mismatch mutation caused by mistakes made by DNA Polyermase during
replication. ✔️Ans - B: Increased methylation of the promoter region of a
tumor suppressor gene in a developing fetus.
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