Which nutrients are classified as the essential amino acids found in both animal and plant-based food?

Essential amino acids are the building blocks of proteins that the body cannot synthesize and must obtain from food. There are 9 essential amino acids that are critical for various physiological functions, including muscle growth, repair, and the production of hormones and enzymes. Both animal and plant-based foods can provide these essential amino acids, although the sources may differ in their amino acid profiles.

Animal-based foods, such as meat, dairy, and eggs, are considered complete proteins because they contain all essential amino acids in sufficient quantities. Plant-based foods, like quinoa, soy, nuts, and seeds, can also supply these essential amino acids; however, some plant sources may lack one or more essential amino acids or may not provide them in adequate amounts. Therefore, combining different plant proteins can help ensure a person gets all essential amino acids.

The other options—carbohydrates, fats, and vitamins—are crucial nutrients but do not include amino acids. Carbohydrates serve primarily as energy sources, fats are important for hormone production and cell membrane structure, and vitamins play various roles in metabolic processes but do not provide amino acids or protein. Thus, the classification of essential amino acids falls under proteins.