The synthesis of DNA by DNA polymerase occurs in the 3' to 5' direction 5' to 3' direction 5' to 5' direction 3' to 3' direction TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following possesses both 5'-3' and 3'-5' exonuclease activity? Kornberg enzyme DNA polymerase III Taq DNA polymerase None of these TRUE ANSWER : ? YOUR ANSWER : ?
In E.coli, which enzyme synthesizes the RNA primer for Okazaki fragments? DnaG DnaA all of these DnaC TRUE ANSWER : ? YOUR ANSWER : ?
DNA gyrase is inhibited by both (a) and (b) nalidixic acid tetracycline cephalosporin TRUE ANSWER : ? YOUR ANSWER : ?
The replication of chromosomes by eukaryotes occurs in a relatively short period of time because the eukaryotes have more amount of DNA for replication the eukaryotic replication machinery is 1000 times faster than the prokaryotes eukaryotic DNA is always single stranded each chromosome contains multiple replicons TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following lacks 3'-5' exonuclease activity? All of these Short fragment of DNA polymerase I Taq DNA polymerase T4 DNA ligase TRUE ANSWER : ? YOUR ANSWER : ?
Proofreading activity to maintain the fidelity of DNA synthesis occurs after the synthesis has been completed is a function of the 3'-5' exonuclease activity of the DNA polymerases requires the presence of an enzyme separate from the DNA polymerases occurs in prokaryotes but not eukaryotes TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statements on replication in E.coli is correct? It occurs in a unidirectional manner It occurs in bidirectional manner Always uses T7 DNA polymerase when infected by T7 phage Occurs only when λ phase has infected E. coli TRUE ANSWER : ? YOUR ANSWER : ?
Both strands of DNA serve as templates concurrently in excision repair mismatch repair none of these replication TRUE ANSWER : ? YOUR ANSWER : ?
During DNA replication in prokaryotes, synthesis begins on the circular chromosome at any stretch of DNA that is high in AT pairs always at the same place at the promoter randomly on the chromosome TRUE ANSWER : ? YOUR ANSWER : ?