A) Oxytocin
B) Thyroxin
C) Pituterin
D) Secretin
Correct Answer: B
Solution :
Thyroxin is iodine containing hormone secreted from thyroid gland. Iodine binds tyrosine molecules of thyroglobin and form Tj (Mono iodo thyronine), T2 (Di iodo thyronine) T3 (Tri iodo thyronine) and T4 (Tetra iodo thyronine). Tetra iodo thyronine is known as thyroxine. So thyroxine is chemically amino acid derivative. Oxytocin and secretin are protein in nature. So made up of amino acid.
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