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DNA Structure and Replication

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

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

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

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DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

helicase
restriction endonuclease
transposase
reverse transcriptase

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DNA Structure and Replication
What is the approximate percentage of repetitive DNA sequences in human DNA?

30 to 40%
10 to 20%
20 to 30%
40 to 50%

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DNA Structure and Replication
DNA can be sequenced by the

chain termination procedure
physical method
chemical method
both (a) and (b)

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DNA Structure and Replication
Which of the following in DNA replication and transcription are common?

synthesis in the 5'-3' direction
incorporation of deoxynucleotides
None of these
utilization the same enzyme

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