What is a characteristic of complete proteins?

Complete proteins are defined by their ability to provide all nine essential amino acids that the body cannot synthesize on its own. This characteristic is critical for maintaining various bodily functions, including muscle repair, immune function, and overall health.

While many complete proteins are indeed found in animal products, there are also plant-based sources that can provide all essential amino acids, such as quinoa and soy. Therefore, stating that they are only found in animal products does not encompass the full scope of complete proteins.

Regarding calorie content, it is not accurate to characterize complete proteins as low in calories, as the caloric content varies significantly depending on the source of the protein. Thus, the defining feature of complete proteins is their comprehensive amino acid profile, distinguishing them as crucial components of a balanced diet.