The monomer of a carbohydrate is a monosaccharide/Remix_of_Openstax%3AMicrobiology_by_Parker_Schneegurt_et_al/02%3A_Chemistry_and_Biochemistry/2.05%3A_Carbohydrates). Monosaccharides are the basic building blocks of all sugars and starches. They are simple sugars that have the basic formula of a carbon, two hydrogen, and an oxygen molecule (CH2O)n, where n is the number of repeated units/Remix_of_Openstax%3AMicrobiology_by_Parker_Schneegurt_et_al/02%3A_Chemistry_and_Biochemistry/2.05%3A_Carbohydrates). Examples of monosaccharides include glucose, fructose, and galactose.