Name the substances on which the following enzymes act in the human digestive system :

(i) Trypsin (ii) Amylase

(iii) Pepsin (iv) Lipase

(b) -

(i) Trypsin is a pancreatic enzyme which digests protein into amino acids.

(ii) Amylase acts on carbohydrates (starch) and converts it into sucrose.

(iii) Pepsin is a digestive enzyme which digests the proteins and converts them into smaller molecules.

(iv) The enzyme lipase digests fat into fatty acids and glycerol.