Final answer:
Proteins are nutrients made up of amino acids and play important roles in the body. Amino acids are the building blocks of proteins, sourced from animal and plant-based food sources.
Step-by-step explanation:
Proteins are nutrients made up of smaller molecules called amino acids. They have several important roles in the body, such as making up antibodies, muscle fibers, and enzymes that help control cell and body processes. Amino acids are the building blocks of proteins and are essential for protein synthesis. They are sourced from a variety of food sources, including animal products (e.g., meat, fish, eggs, and dairy) and plant-based sources (e.g., soybeans, legumes, nuts, and seeds).