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DNA Structure and Replication

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

All of these
Erythromycin
Bleomycin
Tunicamycin

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

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

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DNA Structure and Replication
The packing ratio of nucleosomes is about

9
8
6
7

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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
Increases
Decreases

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DNA Structure and Replication
Which enzyme catalyzes the elongation of DNA molecules?

DNA polymerase
Helicase
Primase
DNA ligase

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase III
Polymerase I
Polymerase II
none of these

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