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Nucleic Acids

Nucleic Acids
Which pyrimidine base contains an amino group at carbon 4?

Cytosine
Uracil
Thymine
Adenine

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Nucleic Acids
Which of the following is a purine?

Cytosine
Uracil
Adenine
Thymine

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Nucleic Acids
Because DNA is a highly charged polyanion, its stability to heat denaturation

does not depend on hydrophobic interactions
is independent of G - C content
increases with increasing salt
decreases with increasing salt

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Nucleic Acids
In gel electrophoresis, what fragments will move most quickly through a gel?

Large genome
None of these
Small fragments
Large fragments

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Nucleic Acids
Which of the following is found on RNA but not DNA?

Deoxyribose
Adenine
Uracil
Phosphate

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Nucleic Acids
Nucleic acids can be analyzed experimentally by their

molecular weight
absorption of uv light
absorption of visible light
none of these

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