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DNA Structure and Replication

DNA Structure and Replication
Telomeres are usually rich in which nucleotide?

Thymine
Guanine
Adenine
Cytosine

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DNA Structure and Replication
DNAs when charged, migrate in a gel towards the

negative pole
will not migrate
positive pole
none of these

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

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

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DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

strandase
none of these
DNA polymerase
helicase

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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
None of these
incorporation of deoxynucleotides
utilization the same enzyme

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

Three
One
A smear
Two

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