Among social animals, cooperative behavior does NOT usually include
A) alliances among members of the population.
B) everybody doing their own thing.
C) division of labor.
D) increased likelihood of finding mates.
E) a caste system in which individuals do certain jobs.
B
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Cell extension involves
A. loss of water. B. low acidic condition. C. enzymes that produce polysaccharides. D. expansion of cellulose microfibrils. E. water leaving the central vacuole.
If the vas deferens tubes are cut and tied
(vasectomy), the semen will not contain
a. fructose. b. buffers. c. mucus. d. sperm. e. any of these
All of the following pertain to fluoroquinolones, except
A. they are broad spectrum. B. they are used to treat respiratory, urinary, and sexually transmitted infections. C. they are nephrotoxic. D. they are readily absorbed from intestines. E. they include ciprofloxacin and levofloxacin.
pH7 solution is
a. acidic b. neutral c. basic