Populations of different species comprise a(n) ____

a. populations
b. biosphere
c. ecosystem
d. community
e. evolution


ANSWER: d

Biology & Microbiology

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One result of the bottleneck affect can be

a. homozygosity. b. heterozygosity. c. increased genetic diversity. d. disruptive selection. e. the founder effect

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Archaeal sulfate reducers use elemental sulfur as an electron acceptor.

Answer the following statement true (T) or false (F)

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Aspirin and ibuprofen both _____

A) inhibit the synthesis of prostaglandins B) inhibit the release of nitric oxide, a potent vasodilator C) activate the paracrine signaling pathways that form blood clots D) stimulate vasoconstriction in the kidneys

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Monocots typically have leaves with ________ veins and flowers with ________ parts per whorl.

A. parallel; three B. parallel; four to five C. netlike; four to five D. netlike; six E. netlike; three

Biology & Microbiology