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Youngbailey97 Youngbailey97
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6 years ago
Caffeine's stimulant effects occur because it is an _________ neurotransmitter adenosine.
 
  a. agonist for the excitatory
 b. antagonist for the excitatory
  c. agonist for the inhibitory
 d. antagonist for the inhibitory
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6 years ago
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