Injecting an animal with a dose of a chemical molecule that is a precursor for the synthesis of a synaptic neurotransmitter would be expected to
A) reduce the availability of that neurotransmitter.
B) increase the rate of synthesis and release of that neurotransmitter.
C) alter the number of postsynaptic receptors.
D) act as an antagonist at autoreceptors.
E) increase neurotransmitter reuptake into the axon.
Answer: B
Rationale: Injecting an animal with a dose of a chemical molecule that is a precursor for the synthesis of a synaptic neurotransmitter would be expected to increase the rate of synthesis and release of that neurotransmitter.
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