The Sec system is used by
A. both Gram-positive and Gram-negative bacteria.
B. neither Gram-positive nor Gram-negative bacteria.
C. Gram-negative bacteria only.
D. Gram-positive bacteria only.
Answer: A
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Histology is the study of
(a) cells. (b) organelles. (c) tissues. (d) organisms.
An antimicrobial agent that inhibits the growth of bacteria is called
A. Bacteriostatic B. Bacteriocidal C. Synergistic D. Broad spectrum
Diffusion does not require the cell to expend ATP. Therefore, diffusion is considered a type of
A) exocytosis. B) passive transport. C) active transport. D) endocytosis.
For persons with a certain types of heart defects, including artificial valves or a history of infective endocarditis, antibiotics are often prescribed prior to dental procedures to prevent possible infection. This strategy would be best described as
A) Combined antimicrobic therapy B) Synthetic therapy C) Synergy D) Prophylaxis