A screen door allows breezes to enter and aromas to exit but keeps out insects. Its function most resembles
a. the cytosol.
b. the plasma membrane.
c. the ER lumen.
d. a ribosome.
Ans: b. the plasma membrane.
Biology & Microbiology
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Mate-attracting features such as the bright plumage of a male peacock result from
A) intersexual selection. B) artificial selection. C) disruptive selection. D) stabilizing selection.
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The salt marsh system is dominated by
A) carnivores. B) herbivores. C) secondary consumers. D) decomposers.
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Which of the following is a fairly reliable method of characterizing strains of S. aureus?
A. Complement fixation B. Protein fingerprint C. Genome typing D. LPS pattern
Biology & Microbiology