In a simple synapse, neurotransmitter chemicals are released by _____

A) the dendritic membrane
B) the presynaptic membrane
C) axon hillocks
D) cell bodies
E) ducts on the smooth endoplasmic reticulum


Answer: B

Biology & Microbiology

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A student is observing microorganisms in a sample of pond water. One organism of interest has an obvious nucleus and has been moving rapidly during observation and appears to have rows of cilia along its surface. In which of the following groups would this microbe most likely be classified?

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The living or ____________________ part of a community is made up of all of the organisms living together. Fill in the blank(s) with the appropriate word(s)

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A. CO? inexhalations B. Amount of food eaten C. The reactants or products of cellular respiration D. All of these are true

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Which of the following weather conditions would you expect to have the greatest negative impact on the sexual reproduction of mosses and ferns?

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