Which classification of proteins represents those that provide all essential amino acids?

Complete proteins are those that provide all essential amino acids in adequate amounts required by the body. Essential amino acids cannot be synthesized by the body and therefore must be obtained through diet. Foods that fall into this category include animal-based products such as meat, fish, eggs, and dairy, as well as some plant-based sources like quinoa and soy.

This classification is important because the body needs all essential amino acids to build proteins efficiently and maintain various bodily functions, such as muscle repair, enzyme production, and immune responses. Understanding complete proteins is crucial for ensuring a balanced diet, particularly for individuals following vegetarian or vegan diets who may need to combine different protein sources to obtain all essential amino acids.