AP BIOLOGY

Detailed explanation-1: -Many complex carbohydrates are unsubstituted at their reducing ends and are referred to as polysaccharides; examples include the oligosaccharides of milk, the cellulose of plant cell walls, and storage forms such as starch and glycogen.

Detailed explanation-2: -It is a polysaccharide or complex carbohydrate made up of hundreds to thousands of glucose molecules linked together to form a chain. Plants, algae, bacteria, and other microorganisms produce cellulose, whereas animals do not. Cellulose is the primary structural molecule in plant and algae cell walls.

Detailed explanation-3: -The plant cell wall is a dynamic network of several biopolymers and structural proteins including cellulose, pectin, hemicellulose and lignin. Cellulose is one of the main load bearing components of this complex, heterogeneous structure, and in this way, is an important regulator of cell wall growth and mechanics.