Suppose a Particular Neurotransmitter Causes an IPSP in Postsynaptic Cell

question 13

Multiple Choice

Suppose a particular neurotransmitter causes an IPSP in postsynaptic cell X and an EPSP in postsynaptic cell Y. A likely explanation is that ________.

• A) the threshold value in the postsynaptic membrane for cell X is different from that for cell Y
• B) the axon of cell X is myelinated, but that of cell Y is not
• C) only cell Y produces an enzyme that terminates the activity of the neurotransmitter
• D) cells X and Y express different receptor molecules for this particular neurotransmitter

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