Final answer:
Complementary proteins are paired incomplete protein sources that combine to form complete proteins, providing all essential amino acids. Examples include beans and rice.
Explanation:
Complementary proteins are two or more incomplete protein sources that can be combined to make a complete protein. Examples include refried beans and tortillas, pea soup and rye bread, beans and rice, baked beans and brown bread, and peanut butter on whole wheat bread.
Legumes like beans and grains like rice can be complementary protein foods because when consumed together, they provide all nine essential amino acids required by the body. This pairing ensures a balanced intake of amino acids in the diet.
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