Heat-loss mechanisms do NOT include ________
A) reducing activity
B) the evaporation of sweat
C) vasoconstriction of peripheral blood vessels
D) behavior measures such as wearing light, loose clothing
C
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ADH (antidiuretic hormone) is also called vasopressin because at high concentrations it causes
A. dilation of blood vessels. B. decreased sodium retention by the kidneys. C. increased urine output. D. increased potassium secretion by the kidneys. E. constriction of blood vessels.
The triplet codes needed to specify a specific polypeptide chain are found in the
A) cytoplasm. B) gene. C) codon. D) anticodon. E) polypeptide itself.
The axon membrane responds to the injection of a subthreshold positive current with:
A. transient depolarization only in the region where the current is injected B. maintained depolarization until negative current is injected C. maximal depolarization locally and attenuated depolarization along the axon D. immediately opening K+ channels to maintain resting potential E. firing an action potential
A surface chemical that prevents microbial growth is ________.
A. kinin B. interferon C. sebum D. histamine E. leukotriene