Molecules That Serve as Chemical Signals to Open or Close

Question

Molecules that serve as chemical signals to open or close gated ion channels are ________.
A) isotopes
B) ligands
C) responders
D) communicators
E) membrane potentials

Accepted Answer

Ligands are molecules that bind to receptors, including those on ion channels, to induce a response such as opening or closing the channel. This makes them key players in cellular signaling processes.