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Question
Which of these is not affected by tyrosine metabolism?
Which of these is not affected by tyrosine metabolism?
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Solution
The correct option is B Calcitonin
Tyrosine is one of the non essential amino acids. It is a precursor for synthesis of hormones like epinephrine and thyroxine and for melanin pigment too. Calcitonin is a peptide hormone synthesised by parafollicular cells of thyroid gland. It reduces calcium level in blood. Since, its synthesis doesn't require tyrosine as precursor, it is not affected by metabolism of tyrosine.So, the correct answer is 'Calcitonin'.
Tyrosine is one of the non essential amino acids. It is a precursor for synthesis of hormones like epinephrine and thyroxine and for melanin pigment too. Calcitonin is a peptide hormone synthesised by parafollicular cells of thyroid gland. It reduces calcium level in blood. Since, its synthesis doesn't require tyrosine as precursor, it is not affected by metabolism of tyrosine.
So, the correct answer is 'Calcitonin'.
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