The body's automatic tendency to maintain a constant and optimal internal environment is termed _____
A) balanced equilibrium
B) physiological chance
C) homeostasis
D) static equilibrium
C
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The first animals evolved from ________.
A. bacteria B. archaea C. plants D. protists
Cheetahs have been through a genetic bottleneck; evidence for this is that
A. little natural selection occurs in this species. B. they originally came from small areas of Africa. C. these cats are members of an endangered species. D. the body is long, thin, and graceful. E. there is very little genetic variability.
All human cells carry
a. one X and one Y chromosome b. at least one X chromosome c. at least one Y chromosome d. a pair of X chromosomes
Most fluid that enters the digestive system is absorbed through the ____
a. stomach b. pancreas c. small intestine d. lymph vascular system e. large intestine