sugar Any of several simple, water-soluble carbohydrates, which are sweet to the taste. Sugars are classified as monosaccharides or disaccharides. Monosaccharides or "simple sugars", such as glucose, are used by organisms as a source of energy at the cellular level. Dissacharides, such as sucrose, maltose, and lactose, consist of two monosaccharide units held together by a glycosidic bond. Related category • BIOCHEMISTRY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |