Injecting an animal with a dose of a chemical molecule that is a ...

[jparksx]

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.

Question 2

Administration of a drug that binds at a postsynaptic site different from that of the neurotransmitter, and facilitates the opening of ion channels would be termed a(n)
 
  A) indirect antagonist.
  B) ligand.
  C) direct synergist.
  D) indirect agonist.
  E) indirect pheromone.

[sierrahalpin]

Answer to Question 1

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.

Answer to Question 2

Answer: D
Rationale: Administration of a drug that binds at a postsynaptic site different from that of the neurotransmitter, and facilitates the opening of ion channels would be termed an indirect agonist.

[jparksx]

Gracias!

[Dnite]

Excellent