Many Drugs Produce Their Effects by Facilitating or Interfering with Neurotransmitters

question 27

Multiple Choice

Many drugs produce their effects by facilitating or interfering with neurotransmitters at synapses.Which of the following drugs would most likely increase the effect of serotonin?

• A)A drug that binds to directly coupled serotonin receptors but does not change membrane permeability
• B)A drug that prevents the activity of an enzyme that breaks down serotonin molecules in the synaptic cleft
• C)A drug that blocks the effect of Ca2+ ions
• D)A drug that blocks the effect of a conditional neurotransmitter that normally facilitates the effect of serotonin

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