Which structure is like a locked door that only certain neurotransmitter keys can unlock?

Question

Quizplus · Accepted Answer

Receptor sites are the structures that are like locked doors that only certain neurotransmitter keys can unlock. These receptor sites are located on the postsynaptic membrane and are specific to certain neurotransmitters. When a neurotransmitter fits into the receptor site like a key in a lock, it causes a series of chemical changes in the postsynaptic neuron. The result can be either an excitatory or inhibitory postsynaptic potential, which influences whether or not the neuron will fire an action potential.

Which Structure Is Like a Locked Door That Only Certain