The operation of natural selection depends
upon the fact that
a. the strong always survive, whereas the
weak always die.
b. some individuals have a better chance to
produce more offspring.
c. mutations are always harmful.
d. acquired characteristics are inherited.
e. reproduction of all members of a species is
virtually the same.
B
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The structures illustrated in the figure are
found in the a. mouth. b. esophagus. c. stomach. d. small intestine. e. colon.
This protein functions optimally in high H+ concentrations.
a. Keratin b. Hemoglobin c. Actin d. Insulin e. Pepsin
A species of bacterium associated with the oil glands of the skin belongs to the genus
A. Pityrosporum. B. Pityrosporum. C. Staphylococcus. D. Propionibacterium.
Which of the following is a dermatophytic infection of any part of the skin?
A. Tinea corporis B. Tinea barbae C. Tinea capitis D. All of the choices are correct.