An available nutrient molecule ____

a. exists in living or dead tissues
b. cannot be assimilated by organisms
c. can be assimilated by organisms
d. exists in rocks and soil
e. exists as an ion


ANSWER: c

Biology & Microbiology

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a. true b. false

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The autonomic nervous system consists of two parts: the sympathetic and parasympathetic divisions. The sympathetic division is responsible for which type of response?

A) Fight-or-flight responses B) Constriction of the air passages in the lungs C) Stimulation of digestion D) Slowing of the heart rate E) Rest-and-digest responses

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How do birth control pills prevent fertilization?

A. They alter the uterine environment so that sperm cannot survive. B. They prevent implantation. C. They inhibit menstruation. D. They prevent follicle development and ovulation. E. The provide hCG, indicating that fertilization has already occurred.

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