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DNA Structure and Replication

DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

helicase
restriction endonuclease
transposase
reverse transcriptase

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DNA Structure and Replication
Which of the following in DNA replication and transcription are common?

synthesis in the 5'-3' direction
utilization the same enzyme
incorporation of deoxynucleotides
None of these

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DNA Structure and Replication
The accepted hypothesis for DNA replication is

dispersive theory
semi-conservative theory
conservative theory
evolutionary theory

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DNA Structure and Replication
Which DNA polymerase removes RNA primers in DNA synthesis?

Polymerase I
Polymerase III
Polymerase II
none of these

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DNA Structure and Replication
The RNA primers used to initiate replication in E. coli

are removed by helicase + ATP
are joined together by DNA ligase
are removed by Pol I
result in Okazaki fragments on leading strand

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

One
Two
A smear
Three

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