Final answer:
Amino acids are needed to build proteins. Complex carbohydrates are broken down into glucose for energy.
Step-by-step explanation:
Amino acids are needed to build proteins. Proteins are made up of long chains of amino acids, which are the building blocks of protein molecules. They are essential for the growth, repair, and maintenance of body tissues. Complex carbohydrates are broken down into glucose, which is used as a source of energy by the body.
Learn more about The role of amino acids, complex carbohydrates, and glucose in the body