Question

Which statement is not true about thyroxin?

Options

• Iron is essential for the synthesis of thyroxin

• It regulates carbohydrates, protein and fat metabolism in the body

• Thyroid gland requires iodine to synthesize thyroxin

• Thyroxin is also called thyroid hormone

Answer 1

Iron is essential for the synthesis of thyroxin

Explanation -

Thyroxine is a hormone secreted by the thyroid gland. It is carried around the body in the bloodstream. Iodine is necessary for the production of T₃ and T₄ (thyroid hormones). It also regulates the rate of metabolism.