AP BIOLOGY

Detailed explanation-1: -Starch, cellulose and glycogen are all polysaccharides made up of glucose subunits. Starch and glycogen are made up of -glucose subunits, whereas cellulose is made up of -glucose subunits. Cellulose is unbranched and a straight-chain polymer of glucose, whereas starch and glycogen are branched.

Detailed explanation-2: -Glycogen is a glucose polysaccharide occurring in most mammalian and nonmammalian cells, in microorganisms, and even in some plants. It is an important and quickly mobilized source of stored glucose.

Detailed explanation-3: -Glycogen is a branched molecule formed form alpha 1, 4 and alpha 1, 6-glycosidic linkages of glucose monomers. Cellulose is a linear molecule formed from beta 1, 4-glycosidic linkages of glucose monomers.

Detailed explanation-4: -Cellulose is a polysaccharide composed of a linear chain of -1, 4 linked d-glucose units with a degree of polymerization ranged from several hundreds to over ten thousands, which is the most abundant organic polymer on the earth.

Detailed explanation-5: -Cellulose and glycogen each use the same monomer, glucose.