The Rapid Change in Membrane Potential That Occurs When a Ligand

question 126

Multiple Choice

The rapid change in membrane potential that occurs when a ligand binds to an ionotropic receptor is caused by which of the following?

• A) the rapid G protein response that indirectly links receptor to channel
• B) the rapid gating of the ion channel by G protein
• C) the large ion gradient across the membrane
• D) the presence of that protein functioning as both an ionotropic receptor and as the ion channel
• E) the G protein amplification that causes the rapid channel response

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