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DNA Structure and Replication

DNA Structure and Replication
Okazaki fragments occur during

replication
polymerase reaction
synthesis
transformation

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

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

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase III
Polymerase I
none of these
Polymerase II

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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

strandase
helicase
none of these
DNA polymerase

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

phage DNA was similar to bacterial DNA
DNA was responsible for heredity
the ratio of Adenine to thymine was always the same
proteins and DNA were responsible for heredity

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DNA Structure and Replication
The nicks or gaps between Okazaki fragments are eventually sealed by

gyrase
RNA ligase
polymerase
DNA ligase

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