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DNA Structure and Replication

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

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

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

Erythromycin
Tunicamycin
All of these
Bleomycin

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

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DNA Structure and Replication
An RNA primer is synthesized by

ligase
primase
DNA topoisomerase
DNA helicases

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DNA Structure and Replication
There is a single origin for DNA replication in bacteria. How many origins of replication are found in the much larger genomes of eukaryotes such as mammals?

One
Thousands and tens of thousands
none of these
About 100

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DNA Structure and Replication
Reverse transcriptase produces

RNA from DNA
RNA from RNA
DNA from peptides
DNA from RNA

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