NCSF Sport Nutrition Specialist Certification (SNS) Practice Test

Which mineral is primarily known for forming antioxidant enzymes?

1. Iron

2. Copper

3. Selenium

4. Magnesium

The correct answer is: Selenium

Selenium is primarily known for forming antioxidant enzymes, making it a vital mineral in the body's defense system against oxidative stress. This mineral is a key component of selenoproteins, which are integral to various antioxidant enzymes, including glutathione peroxidase. These enzymes serve to neutralize free radicals, minimizing cellular damage and supporting overall cellular health. The importance of selenium in antioxidant defense cannot be overstated, as oxidative damage is linked to a variety of health issues, including chronic diseases and aging. By participating in this protective mechanism, selenium helps maintain the redox balance in cells, which is crucial for optimal metabolic function and overall well-being. Other minerals like iron, copper, and magnesium play essential roles in various biochemical processes in the body, but they are not primarily recognized for their formation of antioxidant enzymes in the same way that selenium is. Iron is mainly known for its role in oxygen transport, copper is involved in iron metabolism and the maintenance of healthy connective tissue, and magnesium plays a role in many enzymatic reactions including those that utilize energy. Although they contribute to overall health, their connection to antioxidant activities is not as direct as that of selenium.