Proteins
Protein-rich foods Proteins: Proteins are included in the class of macronutrients. They are large biomolecules and macromolecules that comprises one or more long chains of amino acid residues. The word "Protein" comes from the Greek word protos, which means "to come first." This is an appropriate name, given that proteins are a primary component of all cells throughout the body. Besides water, proteins form the major part of lean body tissue, totaling about 17% of body weight. Many of our body proteins are found in muscle, connective tissue, and organs, DNA, hemoglobin, antibodies, hormones, and enzymes are examples of proteins in our body. Proteins are crucial to the regulation and maintenance of essential body functions. For example, maintenance of fluid balance, hormone and enzyme production, cell synthesis and repair, and vision each requires specific proteins. Structure of Proteins: Like carbohydrates, proteins are made of the elements carbon, hydroge...