Question

State the role of the following in human digestive system :

(i) Digestive enzymes (ii) Hydrochloric acid ​

Answer 1

Answer:

Digestive enzymes-Digestive enzymes are a group of enzymes that break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body.

Hydrochloric acid- The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins. The acidic gastric juice also kills bacteria. The mucus covers the stomach wall with a protective coating.

Explanation:

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Answer 2

Answer:

i) Digestive enzymes are secreted by the salivary glands-salivary amylase and lipase, stomach - pepsin, pancreas-trypsin, chymotrypsin, lipase, lactase, etc and the small intestine - enterokinase. These enzymes helps to digest major constituents of our food namely carbohydrates, proteins and fats. so that they can be absorbed through the walls of the small intestine into the blood stream.

ii) The hydrochloric acid found in the stomach facilitates the process of digestion by disintegrating complex large food molecules to simpler molecules. The acid activates the pepsinogen enzyme required to digest proteins.

Explanation:

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