Which trace element acts as a cofactor for the enzyme glutathione peroxidase, which helps protect cells from oxidative damage by reducing hydrogen peroxide?

A Selenium ✓
B Chromium
C Molybdenum
D Fluoride

Explanation

Selenium is an essential trace element that acts as a cofactor for the enzyme glutathione peroxidase, which helps reduce hydrogen peroxide and protect cells from oxidative damage.

Mnemonic

Se = Safeguarding Energy

Source

Journal of Nutrition
Minerals, and Trace Elements Minerals and Trace Elements Selenium and Antioxidant Function Medium MEDICAL Confidence: high