An increase in the concentration of which of the following within the interstitial space surrounding an arteriole would cause that vessel to constrict?
A) lactic acid
B) adenosine
C) prostacyclin
D) nitric oxide
E) oxygen
Answer: E) oxygen
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The Treponema pallidum of syphilis can be transmitted by
A. sexual or oral contact. B. contact with contaminated objects. C. clothing. D. the fecal-oral route.
Which of the following statements would not be consistent with the theory for the endosymbiotic origin of mitochondria and chloroplasts?
A. Genes encoded within mitochondria and chloroplasts indicate a closer relationship to prokaryotes than do most nuclear genes. B. The composition of the outer membrane of chloroplasts and mitochondria is similar to the plasma membrane of eukaryotic cells. C. Mitochondria and chloroplasts have some enzymes unique to them. D. Mitochondria and chloroplasts have their own DNA enclosed within a nuclear envelope. E. The composition of the inner membrane of chloroplasts and mitochondria is similar to the plasma membrane of prokaryotic cells.
Which biome probably contains the largest number and most diverse group of large mammals?
A) Savanna B) Tropical rain forest C) Desert D) Tropical deciduous forest E) Chaparral
The processing of information and response in a manner that suggests thinking in the animal is called
A. instinctive behavior. B. environmental induced behavior. C. cognitive behavior. D. associative behavior. E. endogenous behavior.