Receptor molecules

A) are nonspecific.
B) are always lipids.
C) attach to the synaptic cleft.
D) determine whether a neurotransmitter will be excitatory or inhibitory.
E) are not attached to ligand-gated channels.

Receptor Molecules

Molecules, usually found on cell surfaces, that recognize and bind to specific substances, triggering a response.

Neurotransmitter

A chemical substance that is released at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse, causes the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure.

Ligand-Gated Channels

Ion channels in cell membranes that open or close in response to the binding of a chemical signal (ligand), allowing ions to pass through the membrane.