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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?

Tunicamycin
Erythromycin
Bleomycin
All of these

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One medium and one heavy band
One medium band
One light, one medium and one heavy band
One light and one medium band

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DNA Structure and Replication
The nucleosome consists of histone

None of these
tetramer and 146 bp of DNA
hexamer and 146 bp of DNA
octamer and 146 bp of DNA

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DNA Structure and Replication
Messelsen and Stahl model of replication was called

dispersive replication
semi-conservative replication
conservative replication
Cri du Chat

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DNA Structure and Replication
Proteins involved in opening a replication bubble are

DNA topoisomerase
DNA helicases
ligase
single stranded binding proteins

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

the ratio of Adenine to thymine was always the same
DNA was responsible for heredity
proteins and DNA were responsible for heredity
phage DNA was similar to bacterial DNA

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