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.
DNA is a. polymer of nucleotides. ï· Proteins are polymers of amino acids. The specific sequence of amino acids determines. the structure and function of the protein. Proteins have many important functions in cells, including protein enzymes that catalyze chemical reactions, transport proteins and. structural proteins.