Which hormone is an example of an amine derived from the amino acid tryptophan?
Show answer and explanation
Correct answer: Melatonin
While most amine hormones (catecholamines and thyroid hormones) are derived from tyrosine, melatonin is synthesized from tryptophan in the pineal gland. It follows a specific metabolic pathway involving serotonin as an intermediate.
Practice all 40 Hormone Classification and Mechanisms questions
Keep practicing
More Hormone Classification and Mechanisms questions
- A hormone 'permissive effect' is best described by which of the following scenarios?
- Which second messenger system is utilized by Atrial Natriuretic Peptide (ANP)?
- What is the primary reason that steroid hormones have a delayed onset of action (minutes to hours) compared to catecholamines?
- Which of the following is an example of a 'eicosanoid' hormone signaling molecule?
- The phenomenon of 'down-regulation' of receptors occurs in response to:
- Which G-protein subunit is responsible for activating the enzyme Adenylyl Cyclase?