Exams › NEET › Biology

Which of the following correctly describes a precursor relationship involving tryptophan?

1. Tryptophan serves as a precursor for the neurotransmitters serotonin and melatonin.
2. Thyroxine is synthesized by thyroid follicular cells from thyroglobulin.
3. Estrogen is formed from progesterone through a two-step process starting with cholesterol.
4. Cortisone is a steroidogenesis product synthesized in the adrenal cortex.

Correct answer: Tryptophan serves as a precursor for the neurotransmitters serotonin and melatonin.

Solution

The question asks about tryptophan being a precursor to serotonin and melatonin, which is correct. The other options describe unrelated processes involving thyroxine, estrogen, and cortisone.

Related NEET Biology questions

• Coenzymes NAD and NADP contain the vitamin
• All the reactions in glycolysis are reversible except
• Glycogen is stored in
• The \( 3^{\prime}-5^{\prime} \) phosphodiester linkages inside a polynucleotide chain serve to join
• Which among the following is correctly categorized?
• Tracer elements are

⚔️ Practice NEET Biology free + battle 1v1 →