All of the following act as surfactants except ________.
A. soaps
B. iodine
C. alcohols
D. quaternary ammonia
E. detergents
Answer: B
Biology & Microbiology
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The formation of gametes in the gonads can best be called
(a) gametogenesis. (b) spermatogenesis. (c) oogenesis. (d) none of the above.
Biology & Microbiology
Gene regulation is referred to as combinatorial control when:
A. some transcription factors are common to the regulation of multiple genes. B. some transcription factors are unique to the regulation of a single gene. C. certain transcription factors are only used for initiation of transcription of housekeeping genes.
Biology & Microbiology
Chemoreceptors play a role in the sense of _____
a. taste d. hearing b. smell e. both tast and smell c. touch f. all of these
Biology & Microbiology
Overproduction of _____ causes gigantism
a. growth hormone c. insulin b. cortisol d. melatonin
Biology & Microbiology