TExES Physical Education EC-12 Practice Exam

Which of the following is not classified as an essential nutrient?

1. Proteins

2. Carbohydrates

3. Vitamins

4. Amino acids

The correct answer is: Amino acids

Amino acids themselves are not classified as essential nutrients. While proteins are essential nutrients composed of amino acids, they can be categorized into essential and non-essential amino acids. Essential amino acids cannot be synthesized by the body and must be obtained through the diet, whereas non-essential amino acids can be produced by the body. In contrast, proteins, carbohydrates, and vitamins are all recognized as essential nutrients required for various bodily functions. Proteins are crucial for tissue repair and growth, carbohydrates provide energy, and vitamins support numerous biochemical processes. Understanding the distinction between amino acids as part of protein versus essential nutrients helps clarify their classification in nutritional science.