The oxygen production measured in the experiments of this exercise
a. is a consequence of the breakdown of hydrogen peroxide.
b. is an index of enzyme activity.
c. may depend on pH, temperature, or enzyme concentration.
d. is all of the above.
a
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Sympatric species
A. are more likely than allopatric species to display character displacement. B. always show character displacement. C. are less likely than allopatric species to display character displacement. D. are unlikely to be competing.
The neurotransmitter used for muscle contraction is
a. serotonin. b. dopamine. c. GABA. d. acetylcholine. e. aspartate.
A bacterium that is capable of causing disease in an organism is called a...
a. pathogenic bacterium b. ediopathic bacterium c. osteopathic bacterium d. anypathic bacterium
The release of chemicals from injured cells triggers histamine release from
A) macrophages.
B) B cells.
C) neutrophils.
D) phagocytes.
E) mast cells.