ch11-35. A ligand-gated ion channel (such as the nicotinic acetylcholine receptor) is: A) a charged lipid in the membrane bilayer that allows ions to pass through. B) a membrane protein that permits a ligand to pass through the membrane only when opened by the appropriate ion. C) a membrane protein that permits an ion to pass through the membrane only when opened by the appropriate ligand. D) a molecule that binds to the membrane thereby allowing ions to pass through. E) always requires a second ligand to close the channel once it is opened. Ans:C) a membrane protein that permits an ion to pass thro...
ch11-35. A ligand-gated ion channel (such as the nicotinic acetylcholine receptor) is: A) a charged lipid in the membrane bilayer that allows ions to pass through. B) a membrane protein that permits a ligand to pass through the membrane only when opened by the appropriate ion. C) a membrane protein that permits an ion to pass through the membrane only when opened by the appropriate ligand. D) a molecule that binds to the membrane thereby allowing ions to pass through. E) always requires a second ligand to close the channel once it is opened. Ans:C) a membrane protein that permits an ion to pass through the membrane only when opened by the appropriate ligand.