Cultured marble is less expensive and is made from real chips of natural marble embedded in plastic. It's available in sheet form and in standard counter dimensions of 19 and 22 inches deep. Cultured marble comes with or without a wash basin molded into it, for $50 to $80 per running foot, installed.
The Chemistry of Biology: Proteins. Proteins. Proteins are organic compounds that contain the element nitrogen as well as carbon, hydrogen, and oxygen. Proteins are the most diverse group of biologically important substances and are often considered to be the central compound necessary for life.
Noun. 1. protein-any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes; a diet high in protein.mino acid, aminoalkanoic acid-organic compounds containing an amino group and a carboxylic acid group; proteins are composed of various proportions of about 20 common amino acids. recombinant protein-a protein derived from recombinant DNA.