Psychrotolerant microorganisms can survive and grow at
A) refrigeration temperatures.
B) boiling temperatures.
C) extreme fluctuations in water availability.
D) high salt or sugar concentrations.
Answer: A
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The cells that actually secrete antibodies are
A. plasma cells. B. natural killer cells. C. phagocytes. D. T cells.
A trait or disorder that is multifactorial is
A) present in more than one family member. B) found only in one part of the world. C) caused by one or more genes and environmental influences. D) caused by a single gene, with no environmental input.
Which of the following is a primary bacterial cell wall function?
A. transport B. motility C. support D. adhesion
The male peacock's beautiful tail is really a trade-off between
A) sexual selection and natural selection. B) disruptive selection and natural selection. C) natural selection and genetic drift. D) artificial selection and natural selection.