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DNA Structure and Replication

DNA Structure and Replication
Overwinding or overtightening of DNA during replication is caused and removed by

DNAa, gyrase
Single stranded protein, DNAa
DNAb, gyrase
DNAb, DNA polymerase

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

twisting number
helix frequency
none of these
linking number

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DNA Structure and Replication
Okazaki fragments occur during

replication
transformation
polymerase reaction
synthesis

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DNA Structure and Replication
Replication in E. coli is initiated by the generation of short RNA primers using

primase
reverse transcriptase
RNA polymerase
both (a) and (b)

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DNA Structure and Replication
An important difference between eukaryotic and prokaryotic DNA replication is

RNA primers are not required in eukaryotes
eukaryotic DNA polymerases are faster
more DNA polymerases are found in eukaryotes
multiple origins of replication in eukaryotes

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DNA Structure and Replication
Which enzyme catalyzes the elongation of DNA molecules?

DNA polymerase
Helicase
DNA ligase
Primase

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