A human population that is shrinking would be characterized by:
a. a large proportion of prereproductive individuals.
b. a small proportion of prereproductive individuals.
c. a large proportion of reproductive individuals.
d. an equal number of individuals of all age groups.
e. a small proportion of postreproductive individuals.
B
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Mechanoreceptors are excited by:
a. tissue damage b. temperature change c. chemical energy of specific substances d. light e. pressure, a change in position, or acceleration
Large polymers are formed from smaller subunits
by what type of reaction?
a. oxidation b. reduction c. condensation d. hydrolysis e. decarboxylation
A cross between two individuals who differ with respect to two gene pairs is a
____________________ cross. Fill in the blank(s) with the appropriate word(s).
Lipids with unsaturated fatty acids
a. decrease the fluidity of membranes. b. increase the charge associated with the inner face of a membrane. c. increase the fluidity of membranes. d. are present only on the inner side of the plasma membrane.