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DNA Structure and Replication

DNA Structure and Replication
If one cell has AT contents 40%, what will be the percentage of Guanine residue?

60%
15%
Guanine residue can not be calculated
30%

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

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

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

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

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

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

DNA ligase
helicase
DNA polymerase
primase

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DNA Structure and Replication
Which will require a higher temperature to denature?

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

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