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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?

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

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

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DNA Structure and Replication
Which of these drugs bind to DNA and cuts it, producing hydroxyl radicals?

Tunicamycin
Erythromycin
All of these
Bleomycin

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

DNA ligase
primase
helicase
DNA polymerase

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DNA Structure and Replication
During conventional transformation experiments E. coli cells and plasmid DNA interacts in an environment of

high temperature and Mg++
low temperature and Ca++
high temperature and Ca++
low temperature and Mg++

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

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

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