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Question

Which element is needed by the thyroid gland to produce thyroxine hormone?

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

Iodine

Thyroid Gland Function and Hormone Production

The question asks us to identify the specific element required by the thyroid gland to produce the essential thyroxine hormone. Thyroxine plays a critical role in regulating the body's metabolism, heart rate, and temperature.

Element Identification for Thyroxine

We need to determine which of the following elements is necessary for this hormone production:

  • Iodine
  • Potassium
  • Sodium
  • Calcium

Based on the provided correct answer, the element needed by the thyroid gland in the context of this question is Iodine.

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