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DNA Structure and Replication

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

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

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

DNA ligase
polymerase
gyrase
RNA ligase

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DNA Structure and Replication
What is the exact name of the classical Watson-Crick double helix DNA?

A-DNA
B-DNA
Z-DNA
X-DNA

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DNA Structure and Replication
In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?

Increases
Remains same
Decreases
Can not be compared

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DNA Structure and Replication
The DNA polymerase in bacteria, responsible for DNA synthesis is

all of these
Polymerase II
Polymerase III
Polymerase I

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DNA Structure and Replication
The melting of 40-45 bp at the oriC site of E. coli requires

DNA+ ATP + HU + DNAb + DNAa
DNA + ATP + HU + DNAb
DNA + ATP + HU
DNA + ATP + HU + DNAb + DNAa + Pol III holoenzyme

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