A monomer (from Greek mono "one" and meros "part")'s a small molecule that may become chemically bonded to other monomers to form a polymer. The most common natural monomer's glucose, which's linked by glycosidic bonds into polymers such as cellulose and starch, and's over 33% of the weight of all plant matter. Synthetic monomers Examples of monomers are hydrocarbons such as the alkene and arene homologous series. Here hydrocarbon monomers such as phenylethene and ethene form polymers used as pl… (More on Monomers)