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Nucleic Acids

Nucleic Acids
A purine with an amine (NH2) group on the 6th carbon is

adenine
thymine
guanine
cytosine

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

Large fragments
None of these
Small fragments
Large genome

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Nucleic Acids
Which of the following is a purine?

Adenine
Thymine
Cytosine
Uracil

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

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

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Nucleic Acids
The sugar in RNA is __________ , the sugar in DNA is __________

ribose, deoxyribose
deoxyribose, ribose
ribose, uracil
ribose, phosphate

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Nucleic Acids
The most stabilizing force for nucleic acids is

Van der Waals
conformational entropy
electrostatic bond
hydrogen bonds

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