Topoisomerases

question 38

Multiple Choice

Topoisomerases:

• A) can change the linking number in increments of 1 or 2.
• B) can act on single-stranded DNA circles.
• C) change the degree of supercoiling of a DNA molecule but not its linking number of DNA.
• D) occur in bacteria, but not in eukaryotes.
• E) always require energy from ATP.

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