Glycogen and cellulose are types of polysaccharides. Glycogen is the storage polysaccharide in animals, found mainly in muscle and liver, while cellulose is the main component of plant cell walls. DNA and RNA are nucleic acids that contain genetic information. DNA is made of nucleotides containing a phosphate group, deoxyribose sugar, and one of four nitrogenous bases. The order of bases in DNA contains the genetic code. Proteins are made of amino acids, which have an amino group, carboxyl group, hydrogen, and variable R group that gives each amino acid unique properties. Carbohydrates include monosaccharides like glucose, disaccharides made of two monosaccharides, and polysaccharides like