Protein is one of the most important organic compounds needed for the well-being of our body. Our hair and nails are mostly made up of this compound, and they also help in the building and growth of muscles. Seafood, white meat and lean beef might be known as the rich sources of protein and this compound is often associated with various kinds of meat. But do you know? A lot of vegetables are also a rich source for protein, and can essentially replace the meat if you are a vegetarian or want to keep non-veg at bay?