One key difference between cellulose and glucose is that glucose is a simple sugar (monosaccharide), while cellulose is a complex carbohydrate (polysaccharide) made up of long chains of glucose molecules linked together.
Among the options you provided, the most accurate statement would be: glucose is not used to give structure to plants' cell walls while cellulose is. Cellulose provides structural support in plant cell walls, whereas glucose primarily serves as an energy source for living organisms.
So the correct answer is: glucose is not used to give structure to plants' cell walls while cellulose is.