Question

What is cellulose?

Answer 1

Cellulose is the most abundant organic polymer on Earth
Cellulose is a popular food additive used as a stabilizer, emulsifier, thickener, calorie reducer, and anti-caking agent
Cellulose is the substance that makes up most of a plant's cell walls

Answer 2

and cellulose can't be digested by humans as they lack cellulase an enzyme for it's digestion but present in grazing animals.......

Answer 3

cotton is the best example of pure cellulose :)

Answer 4

sugar