Protein structures located on the presynaptic neuron that monitor its activity level are called
A) ionotropic receptors.
B) metabotropic receptors.
C) autoreceptors.
D) transporter molecules.

Question

Quizplus · Accepted Answer

Autoreceptors are protein structures located on the presynaptic neuron that monitor its own activity level. They bind to the neurotransmitter molecules released by the neuron and regulate their release based on the activity level of the neuron. Ionotropic receptors are another type of receptor found in the synapse that directly affect the ion channels in response to the neurotransmitter binding, while metabotropic receptors act indirectly by activating G proteins and intracellular second messengers. Transporter molecules are responsible for reuptake of the neurotransmitter from the synaptic cleft back into the presynaptic neuron.

Protein Structures Located on the Presynaptic Neuron That Monitor Its