A nonliving source of an infectious agent that infects a large number of people is called a
A) fomite.
B) reservoir.
C) vector.
D) vehicle.
Answer: D
Biology & Microbiology
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Facilitated diffusion uses a channel to let components move down their concentration gradient.
a. true b. false
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Which microscope uses two beams of light to produce a three-dimensional color image?
A) fluorescence microscope B) phase-contrast microscope C) darkfield microscope D) DIC microscope E) electron microscope
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