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DNA Structure and Replication

DNA Structure and Replication
Enzymes, responsible for unraveling short segments of DNA is

primase
DNA polymerase
DNA ligase
helicase

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

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

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

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DNA Structure and Replication
The packing ratio of nucleosomes is about

7
8
9
6

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DNA Structure and Replication
The accepted hypothesis for DNA replication is

semi-conservative theory
conservative theory
evolutionary theory
dispersive theory

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

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

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