Final answer:
Glycine-gated Cl- channels are involved in inhibitory synaptic signaling by hyperpolarizing the postsynaptic membrane when glycine binds and opens these channels.
Step-by-step explanation:
The glycine-gated Cl- channels
are involved in inhibitory synaptic signaling. When the neurotransmitter glycine is released at inhibitory synapses, it binds to and opens these channels. The entry of Cl- ions hyperpolarizes the postsynaptic membrane, preventing the generation of an action potential.