Which of the following is essential for the synthesis of thyroxin?

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RRB ALP Previous Paper 2 (Held On: 9 Aug 2018 Shift 2)
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  1. Potassium
  2. Sodium
  3. Calcium
  4. Iodine

Answer (Detailed Solution Below)

Option 4 : Iodine
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Detailed Solution

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  • Thyroid gland is an endocrine gland which is located in the neck.
  • It secretes two hormones, thyroxin, and triiodothyronine which target the central nervous system, the cardiovascular system, and the skeleton.
  • Thyroxine is an inactive form and liver and kidney convert it into an active form called triiodothyronine.
  • Iodine and Selenium are the most crucial micronutrients which are important for the production of thyroid hormones.
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