What is the primary difference between cellulose and starch? a.
Starch is an important source of fuel for humans, while cellulose is a soluble fiber.

b.
Starch is an important source of fuel for humans, while cellulose is an insoluble fiber.

c.
Starch is primarily composed of glucose molecules, while cellulose is composed of fructose molecules.

d.
Starch is primarily composed of fructose molecules, while cellulose is composed of glucose molecules.