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DNA Structure and Replication

DNA Structure and Replication
Each replication bubbles consists of

2 replication forks
3 replication forks
1 replication forks
4 replication forks

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase II
Polymerase I
Polymerase III
none of these

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

Three
A smear
Two
One

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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
E.coli DNA polymerases II and III lack

5' → 3' endonuclease activity
5' → 3' exonuclease activity
partially 5' → 3' exonuclease activity
partially 5' → 3' endonuclease activity

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

helix-turn-helix
zinc finger
bZIP
TFIID

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