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Unformatted text preview: bond, fig 5.4. *Common disaccharides *Sucrose *Lactose *Maltose *Polysaccharides consist of many monosaccharides joined together by glycosidic bonds, fig 5.4. *Common polysaccharides, Table 5.1 *Starch *Glycogen *Cellulose *Chitin *Peptidoglycans *Chitin and peptidoglycans have N-containing residues, Table 5.1. 1 Functions of Carbohydrates *Energy production (glucose and fructose) and storage (glycogen and starch). *Cell identity markers carbohydrate chains attached to cell membrane proteins identify the type of cell. *Building blocks for other molecules such as, DNA and RNA, amino acids and lipids. *Structural - cellulose, chitin, peptidoglycans. Where did carbohydrates come from? *Miller/Urey experiment suggested that carbohydrates could have formed from prebiotic soup i.e. the hot oceans and atmospheric gases of early Earth. 2...
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- Fall '09