Hormone thyroxine, adrenaline and the pigment melanin are formed from
Correct answer: A. Tyrosine
- A. Tyrosine
- B. Proline
- C. Tryptophan
- D. Glycine
Explanation
Hormones thyroxine, adrenaline and the pigment melanin are formed from tyrosine. Explanation of each option: Tyrosine: Tyrosine is the precursor to thyroxine, adrenaline, and melanin. Tryptophan: Tryptophan is the precursor to serotonin and melatonin. Proline: Proline is important for the production of collagen and creatine. Glycine: Glycine is important for the production of proteins, collagen, creatine, and glutathione.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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