An enzyme that catalyzes the cutting and resealing of DNA, and is translated from insertion sequences, is

A) RNA polymerase.
B) DNA ligase.
C) DNA helicase.
D) transposase.
E) DNA polymerase.


D

Biology & Microbiology

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Consider solution A (pH 6) and solution B (pH 9). Which of the following statements is CORRECT?

A) Solution A is 3 times more acidic than solution B. B) Solution A is 300 times more acidic than solution B. C) Solution B is 1,000 times more alkaline (basic) than solution A. D) Solution B is 3,000 times more alkaline (basic) than solution A.

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Fertilization of an ovum occurs in the

A. uterus. B. ovary. C. oviduct. D. vagina. E. ovarian follicle.

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A hard porous test (shell) is characteristic of which protist group?

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Biology & Microbiology