(a) What is the role of hydrochloric acid in our stomach? (b) What is the function of enzymes in the human digestive system?

(a)Hydrochloric acid plays a major role in the process of digestion. It creates a medium of gastric juice acidic so that the enzyme pepsin digests the protein and kills the bacteria present in them. Hydrochloric acid helps your body to break down, digest, and absorb nutrients such as protein.

(b) The enzymes play a lead role in the human digestive system. The enzymes help to breakdown the larger complex molecule into smaller ones like vitamins, proteins and minerals. It also helps to break down dietary fats into smaller molecules. These also help in speeding the digestion process.