Tag Archives: Biological Molecules

OCR AS Biology: Amylose, Amylopectin, Cellulose and Glycogen comparison table

AmyloseAmylopectinCelluloseGlycogen
Monosaccharideα-glucoseα-glucoseβ-glucoseα-glucose
Type(s) of bondα-1,4 glycosidicα-1,4 glycosidic and some 1,6 at branchesβ-1,4 glycosidicα-1,4 glycosidic with a-1,6 at branches
Overall shape of moleculehelixbranchedstraight chainbranched, slightly coiled (more branched than amylopectin)
Hydrogen bonding within or between moleculesHydrogen bonds between sugar units in the chainSome hydrogen bonds between sugar units in the chainHydrogen bonds between sugar units in different chainsSome hydrogen bonds between sugar units in the chain
Solubility in waterInsolubleInsolubleInsolubleInsoluble
FunctionEnergy store in plantsEnergy store in plantsPlant structural role (cell walls)Energy store in animals