Optimal DNA replication requires the coordinated effort of all the following EXCEPT: gyrase single strand binding proteins DNA polymerase II Primase
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Optimal
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gyrase
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single strand binding proteins
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DNA polymerase II
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Primase
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- DNA replication requires ________ . a. DNA polymerase c. primers b. nucleotides d. all are required. DNA polymerase II (in E. coli) is specialized for which of the following functions? DNA replication, DNA recombination, and DNA repair both DNA repair and DNA replication both DNA replication and DNA recombination DNA replication only DNA recombination onlyIn DNA replication, the fundamental reason that Okasaki fragments are produced is that Group of answer choices DNA replication can proceed only in the 5’ to 3’ direction replication on the leading strand is slower than replication on the lagging strand DNA polymerase tends to slip while replicating the lagging strand DNA polymerase has to alternate between the leading and lagging strands during replication none of these are true.
- Which of the following enzymes can break, and rejoin, phosphodiester bonds during the normal DNA replication process in the chromosomes of E. coli cells? single-stranded binding proteins RNA polymerase topoisomerase DNA helicase DNA ligaseWhich of the following enzymes has a major role in joining of DNA fragments (Okasaki fragments) during DNA replication? Group of answer choices DNA gyrase Helicase Primase DNA polymerase DNA ligaseSemi-discontinuous replication means that: DNA synthesis only occurs in the same direction as the replication fork. the double helix unwinds and each strand serves as a template for a new DNA molecule. there are Okazaki fragments associated with the leading strand. DNA synthesis occurs in both a 5’ to 3’ and a 3’ to 5’ direction. there is both a leading and a lagging strand associated with each replication fork.
- . During DNA repair in prokaryotes and eukaryotes, which of the following enzymes replaces the damaged nucleotides, that were excised from the DNA strand, by inserting the correct nucleotides? topoisomerase DNA polymerase DNA helicase an exonuclease DNA ligaseWhat role do the following enzymes play in DNA replication? DNA polymerase Helicase DNA ligaseDuring eukaryotic DNA replication, _________ synthesizes short RNA primers. The primers provide a 3'-OH group to which DNA nucleotides are be added by DNA polymerase. DNA gyrase (topoisomerase) DNA helicase DNA ligase primase
- DNA replication in vivo requires a primer with a free 3' end. What molecule provides this 3' end? Group of answer choices DNA ligase DNA primer RNA primer Helicase None of these is correctWhich of the following DNA repair mechanisms involves the 3’ to 5’ exonuclease function of DNA polymerase? postreplication repair mismatch repair SOS response DNA proofreading base excision repairTrue or False: Polymerases open the DNA and create the replication bubble while helicases run towards the replication forks. The replication forks show the bidirectional replication of DNAs.
