All of the following are examples of functions of an ionotropic receptor except:
A) an ion channel opens when a binds to the receptor.
B) contains an ion channel allowing ions to enter a neuron.
C) relies on effector enzymes to cause changes to the neuron.
D) has subunits that form a ring, which makes the channel.

Question

Quizplus · Accepted Answer

Ionotropic receptors are characterized by their ability to open or close a channel in response to binding of a ligand or a change in voltage. This results in a change in the membrane potential, which can cause physiological effects such as muscle contraction or neurotransmitter release. Option C is not a function of an ionotropic receptor, as it does not involve opening or closing of an ion channel; instead, it describes a function of metabotropic receptors, which rely on effector enzymes to cause changes within the neuron. Options A, B, and D all describe functions of ionotropic receptors.

All of the Following Are Examples of Functions of an Ionotropic