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DNA Structure and Replication

DNA Structure and Replication
Okazaki fragments occur during

synthesis
replication
transformation
polymerase reaction

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DNA Structure and Replication
DNA polymerases I also has

3'-5'exonuclease activity
both (a) and (b)
5'-3' endonuclease activity
5'-3' exonuclease activity

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DNA Structure and Replication
Which of the following is not a structural motif in DNA binding proteins?

zinc finger
helix-turn-helix
TFIID
bZIP

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

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

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DNA Structure and Replication
What does ligase do during replication of DNA?

Digests mRNA when it is no longer needed
Makes copies of mRNA from DNA
Synthesizes the lagging strand
Joins nicks in DNA strands

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DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

none of these
strandase
DNA polymerase
helicase

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