Q. Proofreading activity to maintain the fidelity of DNA synthesis

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Q. Which of the following repairs nicked DNA by forming a phosphodiester bond between adjacent nucleotides?

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Q. The enzyme that catalyzes the synthesis of DNA is called

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Q. Which of the following possesses both 5'-3' and 3'-5' exonuclease activity?

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Q. Which of the following statements on replication in E.coli is correct?

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Q. The replication of chromosomes by eukaryotes occurs in a relatively short period of time because

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Q. In E.coli, which enzyme synthesizes the RNA primer for Okazaki fragments?

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Q. During which of the following process a new copy of a DNA molecule is precisely synthesized?

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Q. DNA gyrase is inhibited by

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Q. Which of the following enzymes unwind short stretches of DNA helix immediately ahead of a replication fork?

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Q. During DNA replication in prokaryotes, synthesis begins on the circular chromosome

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Q. DNA replication rates in prokaryotes are approximately of the order of

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Q. Which of the following lacks 3'-5' exonuclease activity?

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Q. The synthesis of DNA by DNA polymerase occurs in the

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Q. Which binding is inhibited by pactamycin?

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Q. Which of the following act as the blueprint or template for the process of protein synthesis that takes place on ribosomes?

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Q. Negative regulation of protein synthesis is accomplished by

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Q. Site in the ribosome from which the tRNA donates amino acids to the growing polypeptide chain is

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Q. When was the genetic code completed?

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Q. Which stop codon has been found to encode selenocysteine?

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