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DNA Structure and Replication

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

absorption
adhesion
resorption
density

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DNA Structure and Replication
For the DNA replication in eukaryotes, the cell cycle consists of

G2 and M phases
G1, G2 and M phases
S, G2 and M phases
G1,S, G2 and M phases

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

twisting number
helix frequency
none of these
linking number

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

helicase
DNA polymerase
none of these
strandase

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DNA Structure and Replication
How does ethidium bromide interact with DNA?

It intercalates between bases
It binds to phosphate
It does not interact
It binds to adenine

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DNA Structure and Replication
Replication in E. coli is initiated by the generation of short RNA primers using

reverse transcriptase
both (a) and (b)
primase
RNA polymerase

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