Which statement is false about thyroxine?

Iron is essential for the synthesis of thyroxine.

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It regulates carbohydrate, protein and fat metabolism in the body.

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Thyroid gland requires iodine to synthesise thyroxine.

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Thyroxine is also called as thyroid hormone.

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Solution

The correct option is A Iron is essential for the synthesis of thyroxine.
Iodine is essential for the synthesis of thyroxine and not iron. It regulates carbohydrate, protein and fat metabolism in the body. In short, it regulates basal metabolic rate. Thyroxine is also called as thyroid hormone as it is produced by the thyroid gland.

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Question 26
Which statement is not true about thyroxin?

(a) Iron is essential for the synthesis of thyroxin
(b) It regulates carbohydrate, protein and fat metabolism in the body
(c) Thyroid gland requires iodine to synthesise thyroxin
(d) Thyroxin is also called thyroid hormone

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