Which of the Following Statements About Neuro­transmitter Receptors Is False

Multiple Choice

Which of the following statements about neuro­transmitter receptors is false?

A) Ionotropic receptors are ion channels.
B) The acetylcholine receptor of the motor end plate is a metabotropic receptor.
C) Metabotropic receptors are not ion channels.
D) Metabotropic receptors induce signaling cascades in the postsynaptic cell.
E) Responses in the postsynaptic cell mediated by metabotropic receptors are usually slower than those mediated by ionotropic receptors.