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NDA 2022 GAT · General Knowledge · Human Physiology · easy

The deficiency of iodine in the diet causes goitre because iodine is required for the synthesis of

Single correct option

The deficiency of iodine in the diet causes goitre because iodine is required for the synthesis of
  1. A. insulin
  2. B. thyroxine
  3. C. adrenaline
  4. D. growth hormone
Show answer and solution

Answer: (B) thyroxine

Thyroxine, produced by the thyroid gland, contains iodine. When iodine is lacking, the gland enlarges, causing goitre. Using iodised salt prevents this. Insulin and adrenaline do not contain iodine.
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Original question written in the NDA 2022 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake