NANP Board Practice Exam

A protein that supplies all the essential amino acids is considered a:

1. Complete protein

2. Incomplete protein

3. Partial protein

4. Simple protein

The correct answer is: Complete protein

A protein is a macromolecule that plays a vital role in the human body, acting as a building block for muscles, skin, and various other tissues. A complete protein is one that contains all the necessary essential amino acids that the body cannot produce on its own and must come from the diet. Therefore, a complete protein is considered the best source of protein for meeting our body's needs and maintaining essential bodily functions. Option B, C, and D are incorrect as they do not accurately describe a protein that supplies all essential amino acids. Incomplete proteins lack one or more essential amino acids, partial proteins only contain some essential amino acids, and simple proteins are composed of only amino acids and lack other vital nutrients. Thus, they do not qualify as complete proteins, making A, the correct answer.