Question

Question 2. True / False (10 marks) Tor F The DNA sequences shown below are complementary to each other. AATTGCTACGTT AATTGCTACGTT I or F T or F b. Primase carries polymerase activity. c. In prokaryotes, RNA polymerases synthesize RNA at a lower rate than DNA polymerases because it takes time for RNA polymerase to perform proofreading. d. Reverse transcriptase activity is observed in DNA polymerase I in prokaryotes. The base in the following nucleotide is adenine. This nucleotide can be found in both DNA and RNA. I or F Tor F OOCH 6 g Th HSCCH CH-CH HO OH Prokaryotic RNA polymerase has helicase activity. T or F g. T or F h. T or F The 5'methylguanosine cap is linked with phosphate bond at the 5' end of the mRNA in prokaryotes. Telomerase is an enzyme with non-protein component. Gyrase is a target of some antibiotics. Poly-U sequence is upstream to the +1 on the DNA template in RNA synthesis. T or F | i. j. Tor F

Answer 1

TRUE

Prokaryotic DNA Pol 1 does function as reverse transcriptase.

Ricchetti, M., & Buc, H. (1993). E. coli DNA polymerase I as a reverse transcriptase. The EMBO journal, 12(2), 387-396.