Enteric bacteria commonly occupy the human intestine and primarily produce:
A. CO2 and H2gases.
B. methane gas.
C. lactic acid.
D. alcohol.
E. butyric acid.
Answer: A. CO2 and H2gases.
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a. catabolism. b. anabolism. c. converting kinetic energy into potential energy. d. metabolism. e. converting potential chemical energy into kinetic chemical energy.
The cells that function in phloem are:
a. vessels b. sieve elements c. adjunct cells d. sclereids e. periderm
Which of the following hormones may take part in one or more of these functions: daily rhythms, long periods of sleep, and depression?
A) melatonin B) thymosin C) oxytocin D) growth
Coenzymes:
A) break down sugars. B) help enzymes to function. C) serve as catalysts. D) make proteins.