The GABA_A receptor is ________ and controls a ________ channel.

Question

Quizplus · Accepted Answer

The prefix "iono-" refers to ion channels, which are channels for ions to flow through the membrane. Therefore, the receptor is either ionotropic or metabotropic. The suffix "-tropic" refers to how molecules bind to the receptor to induce a response. Metabotropic receptors use a second messenger, while ionotropic receptors directly open or close the ion channels they are associated with. In this case, the GABA_A receptor is ionotropic, which only leaves choices A, B, and E. The final question to answer is what kind of ion channel it is associated with. The answer is chloride, which can be determined by looking at the subunits in the name. The "AS" subunits indicate that it is associated with a chloride channel, whereas the "U" and "B" subunits are not as relevant. Therefore, the correct answer is A.

The GABAA Receptor Is ________ and Controls a ________ Channel

The GABA_A Receptor Is and Controls a Channel