Question

6. Name the property: “ a, b Q; (a + b) Q” = .....................................

7. Identify the property for rational numbers: - = is .........................

8. All natural numbers, all whole numbers and all integers are ..................

9. Rational numbers are also called ..................... numbers.

10. The operation under which the integers is not closed is .................​

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.

Answer 2

Ans 8) Rational numbers

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