Question

Which of the following is a function of selenium? A. Decreases free radicals B. Is needed for the production of thyroxine C. Part of the glutathione peroxidase enzyme system D. All of the above are fu

Answer 1

Selenium functions include decreasing free radicals, production of thyroxine, and part of the glutathione peroxidase enzyme system.

Step-by-step explanation:

Selenium has multiple functions in the body:

1. Decreases free radicals: Selenium acts as an antioxidant and helps protect cellular membranes, DNA, RNA, proteins, and lipids from oxidation.
2. Needed for the production of thyroxine: Selenium is essential for the synthesis of thyroxine, a hormone produced by the thyroid gland that regulates metabolism.
3. Part of the glutathione peroxidase enzyme system: Selenium is an essential component of glutathione peroxidase, an enzyme that helps detoxify free radicals and protect cells.

Therefore, the correct answer is D. All of the above are functions of selenium.