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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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.
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