In its travel through the human body, blood leaving a capillary bed first enters __________.

a) veins
b) arteries
c) venules
d) arterioles


Answer: c) venules

Biology & Microbiology

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Ammonification is the conversion of _________to NH3 and NH4.

A. living plant matter B. primary production C. inorganic nitrogen D. carbon isotopes E. None of these choices are correct.

Biology & Microbiology

The most important receptors for steady touch are

a. Pacinian corpuscles. b. Meissner's corpuscles. c. Merkel's discs. d. Ruffini endings. e. free nerve ending.

Biology & Microbiology

Bacillus infernus is a bacterial species that may be found living

a. at 75°C (167°F) on rocks 3 kilometers beneath earth's surface. b. in our vegetables c. in glaciers. d. at 37°C in our body. e. in all of these locations.

Biology & Microbiology

Which of the following is a complex carbohydrate that cannot be digested?

A) disaccharides B) starches C) fibers D) high fructose corn syrup

Biology & Microbiology