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DNA Structure and Replication

DNA Structure and Replication
The DNA is negatively super coiled, complexes to histone,

HSP-1
All of these
HU
H-NS

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase I
Polymerase II
Polymerase III
none of these

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

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

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

zinc finger
TFIID
helix-turn-helix
bZIP

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DNA Structure and Replication
In DNA double helix, the two DNA chains are held together by

None of these
covalent bonds between the pair of bases
ionic bonds between the pair of bases
hydrogen bonds between the pair of bases

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Single strand break
Dehydration
Depurination
Formation of thymine dimers

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