In the average human, the heart beats ____ times per minute

a. 10
b. 53
c. 72
d. 95
e. 120


ANSWER: c

Biology & Microbiology

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Which of the following domains consists of organisms whose cells lack nuclei?

a. Bacteria and Eukarya b. Archaea and Eukarya c. Archaea and Bacteria d. all of the choices

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The idea that evolution proceeds with long periods of stasis with relatively brief bursts of fast evolutionary change is called

A. catastrophism. B. temporal equilibrium. C. gradualism. D. punctuated equilibrium. E. temporal isolation.

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The structure labeled "A" in the figure is a(n)

a. club-shaped reproductive cell. b. zygote. c. ascus. d. gill from the underside of a mushroom. e. spore sac.

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In a human female, what happens to the collection of oocytes in the ovaries once puberty begins?

A) One oocyte per month matures and completes meiosis I. B) All ooctyes are expelled from the ovaries to complete meiosis II. C) Ovulation stimulates all of the oocytes to complete meiosis II. D) One oocyte per month matures and completes meiosis I and meiosis II. E) The oocytes all mature into eggs as soon as puberty is reached.

Biology & Microbiology