These macromolecules are constructed of smaller units called polymers. These polymers are subdivided into their basic units called monomers.
Polymers account for the molecular uniqueness of organisms.
Twenty amino acids are responsible for all forms of life. These amino acids form every conceivable protein known to man. They include monosaccharides disaccharides, and polysaccharides. The monosaccharide is a monomer, the disaccharide is a polymer,and the polysaccharides are macromolecules. Notice that one molecule of water is missing from the formula.