DNA Replication Which of the following lacks 3'-5' exonuclease activity? Taq DNA polymerase All of these T4 DNA ligase Short fragment of DNA polymerase I Taq DNA polymerase All of these T4 DNA ligase Short fragment of DNA polymerase I ANSWER DOWNLOAD EXAMIANS APP
DNA Replication Which of the following possesses both 5'-3' and 3'-5' exonuclease activity? DNA polymerase III Kornberg enzyme None of these Taq DNA polymerase DNA polymerase III Kornberg enzyme None of these Taq DNA polymerase ANSWER DOWNLOAD EXAMIANS APP
DNA Replication Proofreading activity to maintain the fidelity of DNA synthesis occurs in prokaryotes but not eukaryotes occurs after the synthesis has been completed requires the presence of an enzyme separate from the DNA polymerases is a function of the 3'-5' exonuclease activity of the DNA polymerases occurs in prokaryotes but not eukaryotes occurs after the synthesis has been completed requires the presence of an enzyme separate from the DNA polymerases is a function of the 3'-5' exonuclease activity of the DNA polymerases ANSWER DOWNLOAD EXAMIANS APP
DNA Replication Which of the following statements on replication in E.coli is correct? It occurs in a unidirectional manner Occurs only when λ phase has infected E. coli Always uses T7 DNA polymerase when infected by T7 phage It occurs in bidirectional manner It occurs in a unidirectional manner Occurs only when λ phase has infected E. coli Always uses T7 DNA polymerase when infected by T7 phage It occurs in bidirectional manner ANSWER DOWNLOAD EXAMIANS APP
DNA Replication DNA gyrase is inhibited by cephalosporin nalidixic acid tetracycline both (a) and (b) cephalosporin nalidixic acid tetracycline both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
DNA Replication Which of the following enzymes unwind short stretches of DNA helix immediately ahead of a replication fork? Single-stranded binding proteins Helicases DNA polymerases Topoisomerases Single-stranded binding proteins Helicases DNA polymerases Topoisomerases ANSWER DOWNLOAD EXAMIANS APP
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