This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Which of the following hormone is synthesized from the amino acid Tyrosine? \nSelect and explain. \nA. Calcitriol, B. Calcitonin, C. Thyroxin, D. Coisol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The thyroid hormones triiodothyronine (T3) and thyroxine (T4) in the colloid of the thyroid also are derived from tyrosine. In dopaminergic cells in the brain, tyrosine is conveed to levodopa by the enzyme tyrosine hydroxylase (TH). Tyrosine is also the precursor to the pigment melanin.', 'role': 'assistant'}]