Given the characteristics of small-molecule transmitters and neuropeptides,we can conclude that small-molecule transmitters
A)are well-suited to roles as neurotransmitters, whereas neuropeptides are well-suited to roles as neuromodulators.
B)are well-suited to roles as neuromodulators, whereas neuropeptides are well-suited to roles as neurotransmitters.
C)and neuropeptides are equally well-suited to be either neurotransmitters or neuromodulators.
D)and neuropeptides frequently act as neuromodulators and neurohormones, but rarely function as neurotransmitters.

Question

Given the characteristics of small-molecule transmitters and neuropeptides,we can conclude that small-molecule transmitters​
A)are well-suited to roles as neurotransmitters, whereas neuropeptides are well-suited to roles as neuromodulators.
B)​are well-suited to roles as neuromodulators, whereas neuropeptides are well-suited to roles as neurotransmitters.
C)​and neuropeptides are equally well-suited to be either neurotransmitters or neuromodulators.
D)and neuropeptides frequently act as neuromodulators and neurohormones, but rarely function as neurotransmitters.

Quizplus · Accepted Answer

Small-molecule transmitters are well-suited to be neurotransmitters because they are released in response to an action potential and act quickly by binding to ionotropic receptors. Neuropeptides, on the other hand, are larger and act more slowly by binding to metabotropic receptors, making them more suitable for neuromodulatory roles that affect the release or uptake of other neurotransmitters.

Given the Characteristics of Small-Molecule Transmitters and Neuropeptides,we Can Conclude