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DNA Structure and Replication

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

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

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DNA Structure and Replication
DNA replication takes place in which direction?

Randomly
5 'to 3'
Vary from organism to organism
3' to 5'

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DNA Structure and Replication
Okazaki fragments occur on the __________ and are bonded together by __________

Lagging strand, ligase
mRNA, anticodons
tRNA, polymerase
Leading strand, polymerase

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One light, one medium and one heavy band
One medium and one heavy band
One medium band
One light and one medium band

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DNA Structure and Replication
Who's X-ray work aided Watson and Crick in their discovery of the double helix?

W.H. Bragg
Leaderberg
R. Franklin
L. Pauling

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