All the following statements concerning transmitter-gated ion channels are true except:
(a) are ligand-gated channels
(b) are voltage-gated channels
(c) convert the chemical signal neurotransmitter into an electrical signal
(d) are receptors

(b) Are Voltage-gated channels

Explanation:

Transmitter gates ion channels are also called ionotropic neurotransmitter receptors as one or more parts of the ion channel serve as a receptor for specific neurotransmitters.

Binding of the specific neurotransmitter to the receptor stimulates the opening of the ion channels and allows the transmembrane transport of specific ion.

The voltage-gated ion channels are the ones that open and close in response to changes in the voltage across the plasma membrane.

For example, voltage-gated Na+ channels are opened in response to depolarization of the membrane only.

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