The portion of the peripheral nervous system that regulates the internal environment is the:a
telencephalic nervous system.
b. autonomic nervous system.
c. thalamic nervous system.
d. somatic nervous system.
e. hypothalamic nervous system.
B
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The bottleneck effect, when a population is suddenly reduced, can lead to genetic drift. Which of the following is least likely to result in the bottleneck effect in a population?
A) flood B) habitat destruction C) predation D) immigration
The highest amount of oxygen will be found in soils containing large amounts of _____
A) clay B) sand C) gravel D) silt
Segments of eukaryotic DNA that can move or be copied from one site to another in the genome are called
A) exons. B) plasmids. C) transposable elements. D) vectors.
Which of the following is primarily responsible for the shape of a virion?
A) the type of nucleic acid B) the number of segments of the viral genome C) the source of the envelope D) the capsid E) the specific host protein the virus targets