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NUCLEIC ACIDS

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

is independent of G - C content
decreases with increasing salt
increases with increasing salt
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
Nucleoside is a pyrimidine or purine base

hydrogen bonded to a sugar
covalently bonded to a sugar
None of these
ionically bonded to a sugar

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

Small fragments
Large genome
Large fragments
None of these

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

Uracil
Adenine
Cytosine
Thymine

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