Anaerobic methanogens produce ____

a. carbon monoxide
b. carbon dioxide
c. ammonia sulfide
d. methane
e. hydrogen sulfide


ANSWER: d

Biology & Microbiology

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Which of the following is NOT under the

control of the autonomic nervous system?

a. smooth muscle b. cardiac muscle c. glands d. skeletal muscle e. all of these are under the control of the autonomic nervous system

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____ allow(s) land animals to exchange gases with air across a moist surface

a. Gills b. Moist skin c. A digestive system d. Lungs e. Nasal passages

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In reabsorption

a. plasma proteins are returned to the blood. b. excess hydrogen ions are removed from the blood. c. excess water is passed on to the urine. d. nutrients and ions are selectively returned to the blood. e. drugs and foreign substances are passed into the urine.

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The stapes, malleus, and ________ bones are located in the middle ear

Fill in the blank(s) with correct word

Biology & Microbiology