At a synapse, the receptors for the neurotransmitters are located
A)in the synaptic cleft.
B)on the plasma membrane of the presynaptic neuron.
C)on the plasma membrane of the postsynaptic neuron.
D)in the cytosol of the postsynaptic neuron.

Question

Quizplus · Accepted Answer

The receptors for neurotransmitters are located on the plasma membrane of the postsynaptic neuron, which is the neuron that receives the signal from the presynaptic neuron. The synaptic cleft is the space between the presynaptic and postsynaptic neurons, and the receptors cannot be located there as they need to bind with the neurotransmitters to initiate a signal. The plasma membrane of the presynaptic neuron does not contain receptors for neurotransmitters as it releases the neurotransmitters into the synaptic cleft. The cytosol of the postsynaptic neuron is also an unlikely location for the neurotransmitter receptors as they need to be embedded in the membrane to receive the signal.

At a Synapse, the Receptors for the Neurotransmitters Are Located