NEET 2009 Biology question

Which of the following hormones contains iodine?

(1)testosterone
(2)adrenaline
(3)thyroxineCorrect
(4)insulin

Answer: (3)

Solution

Thyroxine (, tetraiodothyronine) and triiodothyronine (), secreted by the thyroid gland, are iodinated derivatives of the amino acid tyrosine, so thyroxine contains

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Question ID VK-090334