Final answer:
Starch and cellulose are both polysaccharides composed of glucose units but have different structures and functions. Starch is a storage product found in plants, while cellulose is a component of the plant cell wall. Starch is branched, and cellulose is unbranched.
Step-by-step explanation:
Starch and cellulose are both polysaccharides composed of glucose units, but they have different structures and functions. Starch is a storage product found in plants and consists of two polymers: amylose, which is linear, and amylopectin, which is branched. Cellulose is a component of the plant cell wall and is a linear polymer of glucose linked by β-1,4-glycosidic bonds. Both starch and cellulose are examples of branched and unbranched polysaccharides, respectively.