Gastric juice
A. contains hydrochloric acid.
B. digests fats.
C. assists the function of saliva.
D. is produced by the pancreas.
A. contains hydrochloric acid.
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Ca+ ion channels are found:
A. only at the axon terminal membrane. B. only along the terminal ends of the dendrites. C. throughout the length of the axon. D. throughout the entire neuron. E. only at the axon hillcock.
In Lives and Opinions of the Eminent Philosophers, Diogenes recounts how Plato’s Academy amended his definition of a human—“a featherless biped” to include “with broad, flat nails”—after Diogenes brought him a plucked chicken. Clearly, none of these philosophers were being entirely serious, but this exchange highlights a difficulty with phylogenies based entirely upon phenotypes. Which of these definitions would have prevented Diogenes from presenting another animal to Plato and declaring it a man?
a. “a hairy biped with stereoscopic vision” b. “a featherless biped with fingers and a nose” c. “a biped with an upright posture and fully opposable thumbs” d. “a biped that talks and uses tools”
HIV
A. is a retrovirus. B. infects most mammals. C. can be killed with antibiotics. D. causes liver cancer. E. can be transmitted through the skin.
The theory that life began in the distant past from nonliving molecules that became able to reproduce themselves is called
A) prehistoric evolution. B) endosymbiont evolution. C) natural selection. D) spontaneous evolution. E) prebiotic evolution.