Question

What are the receptors that cause fast, short responses at the postsynaptic neuron are _______ whereas receptors that cause slow, longer-lasting responses are ______.

Ionotropic, channel-unlinked

Metabotropic, ionotropic

ionotropic; metabotropic

metabotropic; channel-unlinked

Answer 1

Ionotropic receptors cause fast, short responses at the postsynaptic neuron, while metabotropic receptors cause slow, longer-lasting responses.

Step-by-step explanation:

The receptors that cause fast, short responses at the postsynaptic neuron are ionotropic, whereas receptors that cause slow, longer-lasting responses are metabotropic. Ionotropic receptors are ligand-gated ion channels and open when the neurotransmitter binds to them. They allow ions to flow across the cell membrane, leading to a rapid response. On the other hand, metabotropic receptors involve a complex of proteins that result in metabolic changes within the cell. They activate second messenger systems and cause slower, longer-lasting responses.