University of Central Florida (UCF) ZOO3744 Neurobiology Practice Exam 2

The neurotransmitter that is derived from tryptophan is serotonin. Tryptophan is an essential amino acid that serves as a precursor in the biosynthesis of serotonin. It undergoes a series of biochemical transformations, first being converted into 5-hydroxytryptophan (5-HTP) and then into serotonin (5-hydroxytryptamine, or 5-HT).

Serotonin plays a crucial role in various physiological functions, including mood regulation, appetite control, and sleep patterns. It is often referred to as the "feel-good" neurotransmitter because of its significant impact on emotional well-being. Understanding the pathway of tryptophan to serotonin is essential in neurobiology, especially considering its implications in mental health and related disorders.

Dopamine, norepinephrine, and epinephrine are all derived from tyrosine, another amino acid, and are not related to tryptophan in terms of their biochemical origins. This distinction is crucial for recognizing how different neurotransmitters are synthesized and their corresponding functions within the nervous system.