What is the principal role of protein in the body? How can complete protein be obtained by people who eat few or no animal products?
Answer: The principal role of proteins in the body are for growth and maintenance of tissue. Also, it is used as a source of energy and acid base balance in the body. People who obtain few or no animal products must learn how to provide complete proteins in their body by eating a certain diet of incomplete proteins, such as grains, seeds, legumes, etc.