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1. Because DNA is a highly charged polyanion, its stability to heat denaturation
A. does not depend on hydrophobic interactions
B. increases with increasing salt
C. is independent of G – C content
D. decreases with increasing salt
2. The sugar in RNA is __________ , the sugar in DNA is __________
A. deoxyribose, ribose
B. ribose, deoxyribose
C. ribose, phosphate
D. ribose, uracil
3. Nucleoside is a pyrimidine or purine base
A. covalently bonded to a sugar
B. ionically bonded to a sugar
C. hydrogen bonded to a sugar
D. none of the above
4. In gel electrophoresis, what fragments will move most quickly through a gel?
A. Large fragments
B. Small fragments
C. Large genome
D. None of these
5. Which pyrimidine base contains an amino group at carbon 4?
A. Cytosine
B. Thymine
C. Uracil
D. Adenine
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