WGU C785 Biochemistry Final Exam(70
QnS) 2022/2023
Which mRNA sequence results in a polypeptide that contains three amino acids? -Correct
Answer- 5' - CUU GAU ACU UAG - 3'
Which RNA sequence would end in the following polypeptide?
Phe-Thr-Val-Stop -Correct Answer- 5' - UUC ACA GUA UAA -
3'
What is the complementary sequence for the following DNA
sequence? 5' - GCC ATC TCG AAT - 3' -Correct Answer- 5' - ATT CGA
GAT GGC - 3'
Assuming 100% reaction efficiency, how many DNA copies are created after the completion of
four complete PCR cycles? -Correct Answer- 16
What is the function of DNA polymerase in the process of PCR? -Correct Answer- It recognizes
the primers and uses the available dNTPs to replicate the template DNA sequence.
5' - [...] ATT CGC TAG GGC [...] - 3' − Normal DNA
5' - [...] ATT CGC GAG GGC [...] - 3' − Mutant DNA
Which type of mutation and outcome characterizes the Mutant DNA? -Correct Answer- A
missense mutation leading to a longer protein
In sickle-cell disease, the glutamic acid (Glu) at position number seven is mutated to valine
(Val). What change in codons corresponds to this mutation? -Correct Answer- GAA to GTA
What are possible blood types of the parents of a patient with blood type AB? -Correct Answer-
A and B
Which pair of chromosomes accurately depicts the genotype of a person with an autosomal
recessive mutant HBB allele and sickle cell anemia? -Correct Answer- option 3- 2 mutant genes
on chromosome 11
Which pair of chromosomes accurately depicts the genotype of a person with an X-linked
QnS) 2022/2023
Which mRNA sequence results in a polypeptide that contains three amino acids? -Correct
Answer- 5' - CUU GAU ACU UAG - 3'
Which RNA sequence would end in the following polypeptide?
Phe-Thr-Val-Stop -Correct Answer- 5' - UUC ACA GUA UAA -
3'
What is the complementary sequence for the following DNA
sequence? 5' - GCC ATC TCG AAT - 3' -Correct Answer- 5' - ATT CGA
GAT GGC - 3'
Assuming 100% reaction efficiency, how many DNA copies are created after the completion of
four complete PCR cycles? -Correct Answer- 16
What is the function of DNA polymerase in the process of PCR? -Correct Answer- It recognizes
the primers and uses the available dNTPs to replicate the template DNA sequence.
5' - [...] ATT CGC TAG GGC [...] - 3' − Normal DNA
5' - [...] ATT CGC GAG GGC [...] - 3' − Mutant DNA
Which type of mutation and outcome characterizes the Mutant DNA? -Correct Answer- A
missense mutation leading to a longer protein
In sickle-cell disease, the glutamic acid (Glu) at position number seven is mutated to valine
(Val). What change in codons corresponds to this mutation? -Correct Answer- GAA to GTA
What are possible blood types of the parents of a patient with blood type AB? -Correct Answer-
A and B
Which pair of chromosomes accurately depicts the genotype of a person with an autosomal
recessive mutant HBB allele and sickle cell anemia? -Correct Answer- option 3- 2 mutant genes
on chromosome 11
Which pair of chromosomes accurately depicts the genotype of a person with an X-linked
