Question

. If the binary operation * is defined on the set Q+ of all positive rational
numbers by a *i= ab. Then, 3 ( * ) is equal to

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Answer 1

Answer:

Topoisomerase: A class of enzymes that alter the supercoiling of double-stranded DNA. (In supercoiling the DNA molecule coils up like a telephone cord, which shortens the molecule.) The topoisomerases act by transiently cutting one or both strands of the DNA.