cellulose vs. glycogen

an inert carbohydrate, (C 6 H 10 O 5 ) n, the chief constituent of the cell walls of plants and of wood, cotton, hemp, paper, etc.

a white, tasteless polysaccharide, (C 6 H 10 O 5 ) n , molecularly similar to starch, constituting the principal carbohydrate storage material in animals and occurring chiefly in the liver, in muscle, and in fungi and yeasts.