WGU C785 Biochemistry Exam 2020 Status: Passed

WGU C785 Biochemistry Exam 2020 Status: Passed 1. Which mRNA sequence results in a polypeptide that contains three amino acids? YOUR ANSWER CORRECT ANSWER 5' - CUU GAU ACU UAG - 3' 5' - UAU GCC CUA CGA - 3' 5' - AUC CAG UAA AAG - 3' 5' - GUC UGA CAC CGG - 3' 2. Which RNA sequence would end in the following polypeptide? Phe-Thr-Val-Stop YOUR ANSWER CORRECT ANSWER 5' - UUC ACA GUA UAA - 3' 5' - UUU UAU GUU UGG - 3' 5' - UUC CAU UGA GUA - 3' 5' - AAU AUG ACA CUU - 3' 3. What is the complementary sequence for the following DNA sequence? 5’ – GCC ATC TCG AAT – 3’ YOUR ANSWER CORRECT ANSWER 5’ – CGG TAG AGC TTA – 3’ 5’ – ATT CGA GAT GGC – 3’ 5’ – TAA CGA GAT CCG – 3’ YOUR ANSWER CORRECT ANSWER 5’ – CGG ATG TCG TTA – 3’ 4. Assuming 100% reaction efficiency, how many DNA copies are created after the completion of four complete PCR cycles? YOUR ANSWER CORRECT ANSWER 24 16 8 4 5. What is the function of DNA polymerase in the process of PCR? YOUR ANSWER CORRECT ANSWER It separates the two DNA strands so that replication may occur. It recognizes the primers and uses the available dNTPs to replicate the template DNA sequence. It synthesizes primers and uses the available dNTPs to replicate the template DNA sequence. It links the products of PCR together to generate a complete strand. 6. 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? YOUR ANSWER CORRECT ANSWER A missense mutation leading to a longer protein A nonsense mutation leading to a longer protein A nonsense mutation leading to a shorter protein A missense mutation leading to a shorter protein 7. In sickle-cell disease, the glutamic acid (Glu) at position number six is mutated to valine (Val). What change in codons corresponds to the correct DNA mutation? YOUR ANSWER CORRECT ANSWER GAA to GTA GAA to GAT GAC to GTC GGU to GTT 8. What are po