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DNA Structure and Replication

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
Which will require a higher temperature to denature?

RNA with a high A-T content
DNA with a high G-C content
RNA with a high G-C content
DNA with a high A-T content

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

Formation of thymine dimers
Single strand break
Dehydration
Depurination

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

H-NS
HU
HSP-1
All of these

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DNA Structure and Replication
Which is the largest among the followings?

Phosphate
Nitrogenous base
Nucleotide
Carbon

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DNA Structure and Replication
The nicks or gaps between Okazaki fragments are eventually sealed by

polymerase
DNA ligase
RNA ligase
gyrase

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