Distilled water refers to water that is nearly free of
a. solutes.
b. ions.
c. gases.
d. suspended solids.
e. none of these.
Answer: a
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What does the biological species concept use as the primary criterion for determining species boundaries?
A) geographic isolation B) niche differences C) gene flow D) morphological similarity E) molecular (DNA, RNA, protein) similarity
A classmate across the room yawns, and then several other students begin to yawn. This is an example of
a. informational influence b. psychological reactance c. group cohesion d. Social contagion
Rabbit muscle myosin will bind to actin from an amoeba. How can this be?
A. The myosin from amoeba and rabbits is similar due to a distant common ancestor. B. The differences in myosin between amoeba and rabbits are not seen in the actin binding site of myosin. C. Proteins are more likely to change in nonfunctional areas. D. The myosin from amoeba and rabbits is similar due to a distant common ancestor, and the differences between them are not seen in the actin binding site. E. All of the answer options are all correct.
How are sound vibrations amplified in a vertebrate ear?
A. by movements of the basilar membrane induced by fluid vibrations B. by movement of the bones of the middle ear C. by differences in the surface area of the eardrum versus the oval window D. by movements of the basilar membrane induced by fluid vibrations AND by movement of the bones of the middle ear