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DNA Structure and Replication

DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

strandase
DNA polymerase
none of these
helicase

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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%?

Can not be compared
Remains same
Decreases
Increases

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DNA Structure and Replication
The packing ratio of nucleosomes is about

9
6
7
8

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DNA Structure and Replication
When DNA polymerase is in contact with guanine in the parental strand, what does it add to the growing daughter strand?

Phosphate
Uracil
Cytosine
Guanine

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DNA Structure and Replication
A cesium chloride will separate DNA molecules by

absorption
adhesion
resorption
density

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DNA Structure and Replication
In an agarose gel, DNA is moving from

A to B
cathode to anode
left to right
anode to cathode

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