Peptides, unlike neurotransmitters, are always

Question

Quizplus · Accepted Answer

Peptides are considered neuropeptides, which are larger molecules than neurotransmitters and are typically degraded by enzymes in the extracellular fluid after they have completed their signaling function.

Answer: C 
 Peptides are often recycled and reused within the presynaptic cell to produce more peptide neurotransmitters. This is in contrast to neurotransmitters, which are typically broken down into inactive metabolites or taken back up into the presynaptic cell via transporters.

Peptides, Unlike Neurotransmitters, Are Always