BIOCHEM C785 Final Exam Latest 2023 update With Complete Solutions

Which mRNA sequence results in a polypeptide that contains three amino acids? - ANS 5' - CUU GAU ACU UAG - 3' Which RNA sequence would end in the following polypeptide? Phe-Thr-Val-Stop - ANS 5' - UUC ACA GUA UAA - 3' What is the complementary sequence for the following DNA sequence? 5' - GCC ATC TCG AAT - 3' - ANS 5' - ATT CGA GAT GGC - 3' Assuming 100% reaction efficiency, how many DNA copies are created after the completion of four complete PCR cycles? - ANS 16 What is the function of DNA polymerase in the process of PCR? - ANS 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? - ANS 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? - ANS GAA to GTA What are possible blood types of the parents of a patient with blood type AB? - ANS A and B