Sensory receptors:a
produce internal environmental stimuli.
b. convert stimulus energy to electrical energy.
c. maintain a constantly hyperpolarized plasma membrane.
d. produce a small amount of energy on a continual basis.
e. produce action potentials of varying amplitudes in response to stimuli of differing
intensities.
B
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A. the centromeres do not move toward the poles. B. the poles do not move apart. C. the spindle apparatus does not disassemble. D. sister chromatids are mismatched and therefore fail to separate.
The ability of humans to resist a disease is called
A) dormancy. B) immunity. C) resistance. D) susceptibility.
The "age of fishes" was the _____ period.
A. Ordovician B. Silurian C. Carboniferous D. Permian E. Devonian
Lightning converts N2 to a nitrogen form that enters soil and can be readily assimilated by plants
Indicate whether the statement is true or false