Antimicrobial agents that inhibit bacterial growth but generally do not kill the organism are known as:
a. bactericidal.
b. antibiotic.
c. bacteriostatic.
d. antagonistic.
C
Bacteriostatic means the inhibition of bacterial growth, whereas bactericidal means killing bac-terial growth.
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Four of the five answers listed below are parts of the same sense organ. Select the exception
a. fovea b. retina c. vitreous body d. ampulla e. iris
When light excites chlorophyll, the chlorophyll
molecules
a. change to carotene. b. become agitated and move rapidly. c. become radioactive. d. electrons jump to a higher energy level. e. become ionized
Infectious disease and parasites that affect population size are ____
a. carrying capacities b. replacement factors c. density-dependent controls d. density-limiting controls e. density-independent controls
A newly hatched duck adopts the most frequently encountered animal or object it sees during a sensitive period as its mother. This is an example of
A) operant conditioning. B) insight learning. C) habituation. D) trial-and-error learning. E) imprinting.