Correct option is C
Cellulose is a complex carbohydrate that forms the structural component of plant cell walls. In humans, cellulose cannot be digested because we lack the enzyme cellulase, which is necessary to break down cellulose into glucose. While cellulose is not digested, it plays a crucial role as dietary fiber, helping to regulate digestion and prevent constipation.
(a) Starch: Starch is broken down by the enzyme amylase into simpler sugars.
(b) Casein: Casein is a protein found in milk, and it is digested by proteolytic enzymes like pepsin.
(d) Vegetable oil: Vegetable oils are lipids and are digested by lipase enzymes into fatty acids and glycerol.
