Plasmids
A. are essential for survival.
B. are found in all bacteria.
C. often carry genes controlling pathogenicity.
D. are located in microcompartments.
E. cannot be passed between organisms.
Answer: C
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Which biome is dominated by coniferous trees adapted to surviving long, harsh winters and short, wet summers?
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Which of the following would be selective against the tubercle bacillus?
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The primitive atmosphere of Earth may have favored the abiotic synthesis of organic molecules because it __________.
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