LIFE SCIENCE

Detailed explanation-1: -cellulose, a complex carbohydrate, or polysaccharide, consisting of 3, 000 or more glucose units.

Detailed explanation-2: -Cellulose is an example of a Carbohydrate as it is made of polysaccharides.

Detailed explanation-3: -Cellulose is a linear polysaccharide polymer with many glucose monosaccharide units. The acetal linkage is beta which makes it different from starch. This peculiar difference in acetal linkages results in a major difference in digestibility in humans.

Detailed explanation-4: -Hence, cellulose is not a protein.

Detailed explanation-5: -Glycogen and cellulose are both polysaccharides made of glucose whose properties differ because of how the glucose molecules are bonded together. Glycogen is a branched molecule formed form alpha 1, 4 and alpha 1, 6-glycosidic linkages of glucose monomers.