Iodine | MCQs

Explanation

Goiter is caused by iodine deficiency.

It results in an enlarged thyroid gland.

Iodine deficiency can cause mental retardation in children.

Particularly if the deficiency occurs during fetal development or early childhood.

This is because iodine is essential for brain development and thyroid function.

The effects of the thyroid come from two iodine-containing hormones.

Explanation

Deficiency of Iodine causes Goitre disease.

Thyroxine is a hormone that causes Goitre in the human body.

Explanation

Seaweed is one of the best sources of iodine, and kelp is the most common type of seaweed harvested for food

Explanation

Tincture of iodine is iodine dissolved in alcohol (usually ethanol).

Alcohol acts as a solvent and helps iodine work as an antiseptic.

Explanation

 When iodine dissolves in water in the presence of KI, it forms the I₃⁻ ion.

Explanation

The thyroid gland is part of the endocrine system and produces thyroid hormones,

which deficiency can cause goiter disease.

Cells producing thyroid hormones extract and absorb iodine from the blood and incorporate them into the thyroid hormones.

Explanation

The effects of the thyroid come from two iodine containing-hormones

Explanation

Glycogen gives a red-brown or reddish-blue color with iodine, not pure blue like starch does.

This reaction occurs due to the helical structure of glycogen, which traps iodine molecules and results in a characteristic color—typically brown to reddish-blue.

Explanation

Goiter is a disease in which the thyroid gland present in the neck enlarges, resulting in swelling in the neck.

 Goiter is: Mineral Deficiency Disease

It is often observed that people living in hilly areas suffer from goiter because: Of low atmospheric pressure there, their diet and drinking water are deficient in iodine

Explanation

The effects of the thyroid come from two iodine containing-hormones