This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
Ion ligand receptors are 
Select and explain. 
A. Glycine receptor, B. b adrenergic receptors, C. V1 receptor, D. Insulin receptor
A: Glycine receptor
Answer: A: Glycine receptor 
Explanation: LikeGABA, glycine acts by increasing Cl- conductance.The ionotropic receptors of glutamate are ligand-gated ion channels that resemble nicotinic cholinergic receptors and GABA and glycine receptors. Catecholamines acting on b adrenergic receptors use cAMP mechanism.