MMSC 490 Exam 2 Questions with Correct Answers

MMSC 490 Exam 2 Questions with Correct Answers Which eukaryotic DNA polymerase replicates the lagging strand in the 3ʹ to 5ʹ direction? a. α b. γ c. δ d. None of the above; the lagging strand is replicated in the 5ʹ to 3ʹ direction. - Answerd. None of the above; the lagging strand is replicated in the 5ʹ to 3ʹ direction. DNA polymerases can synthesize DNA: a. de novo, by catalyzing the polymerization of free dNTPs. b. by adding dNTPs to complementary dNTPs on a single-stranded DNA. c. by adding dNTPs to a hydroxyl group on the end of a growing polynucleotide chain hydrogen-bonded to a strand of RNA. d. by adding dNTPs to a hydroxyl group on the end of a growing polynucleotide chain hydrogen-bonded to a strand of DNA. - Answer-d. by adding dNTPs to a hydroxyl group on the end of a growing polynucleotide chain hydrogen-bonded to a strand of DNA. In addition to synthesizing DNA, DNA polymerase I has a second catalytic activity: it can a. synthesize short RNA sequences. b. synthesize short polypeptide sequences. c. remove RNA primers. d. ligate short segments of DNA together. - Answer-c. remove RNA primers. Which eukaryotic DNA polymerase replicates the leading strand in the 5ʹ to 3ʹ direction? a. α b. ε c. δ d. γ - Answer-b. ε