The ion channel that opens in response to acetylcholine is an example of a _____ signal transduction system.
A) G-protein
B) ligand-gated
C) receptor-enzyme
D) serpentine receptor
E) voltage-gated

Question

Quizplus · Accepted Answer

The ion channel that opens in response to acetylcholine is a ligand-gated ion channel, meaning it is opened by the binding of a specific ligand (in this case, acetylcholine). It is not a G-protein-coupled receptor (A), receptor-enzyme (C), or serpentine receptor (D), which all involve intracellular signaling pathways. It is also not a voltage-gated ion channel (E), which is opened by changes in membrane potential rather than ligand binding.

The Ion Channel That Opens in Response to Acetylcholine Is