A major group of enzyme-linked receptors are:a
phospholipases.
b. adenylyl cyclases.
c. tyrosine kinases.
d. G proteins.
e. ion channels
C
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The kind of learning that occurs when a reward or punishment is received after an animal has engaged in a behavior is termed
A. operant conditioning. B. instinctive behavior. C. adaptive behavior. D. inoperant conditioning.
The digestion of a protein results in
A. sugars. B. enzymes. C. amino acids. D. the formation of peptide bonds.
The production of uric acid is complex and energy intensive, yet it persists as a means of nitrogenous waste disposal in many organisms. What advantage does uric acid excretion offer over urea excretion?
a. Uric acid can be metabolized for energy. b. Uric acid excretion does not require oxygen. c. Uric acid excretion conserves water. d. Uric acid stimulates the immune system.
The center for spatial orientation and posture is the:
a. cerebrum b. pons c. cerebellum d. thalamus e. hypothalamus