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DNA Structure and Replication

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

Polymerase I
Polymerase II
Polymerase III
none of these

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

transposase
helicase
restriction endonuclease
reverse transcriptase

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DNA Structure and Replication
If one cell has AT contents 40%, what will be the percentage of Guanine residue?

60%
Guanine residue can not be calculated
30%
15%

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

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

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DNA Structure and Replication
In an agarose gel, DNA is moving from

anode to cathode
cathode to anode
left to right
A to B

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

Two
Three
One
A smear

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