International Sports Sciences Association (ISSA) Trainer Practice Exam

Which of the following is an example of a micronutrient?

1. Calcium

2. Vitamin C

3. Protein

4. Carbohydrate

The correct answer is: Vitamin C

Micronutrients are essential nutrients that the body requires in smaller amounts compared to macronutrients. They play critical roles in various physiological functions, including immune response, bone health, and energy metabolism, but they do not provide energy like macronutrients do. Vitamin C is a classic example of a micronutrient because it is needed in small amounts for various vital functions, such as acting as an antioxidant and aiding in the absorption of iron, as well as supporting the immune system. It is categorized among vitamins, which are key components of the micronutrient category. In contrast, the other options represent macronutrients or elements of nutrition that are required in larger quantities. Calcium, while it is essential for bone health, is generally considered a macromineral rather than a micronutrient since it is needed in larger amounts compared to vitamins. Protein and carbohydrates are macronutrients that serve as primary sources of energy and are necessary for building and repairing tissues.