Assertion A Gastric juice in the stomach starts protein digestion Reason R Gastric juice mainly cont...........

Science Affairs Biology

Download Solution PDF

Assertion (A): Gastric juice in the stomach starts protein digestion.

Reason (R): Gastric juice mainly contains hydrochloric acid and pepsin.

Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true but (R) is not the correct explanation of (A).

(A) is true but (R) is false.

(A) is false but (R) is true.

छोटे Courses बड़े Results

Master Biology

Prepare through Micro-courses

Try Now

Explanation:

In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva. Saliva, a liquid secreted by the salivary glands, contains salivary amylase, an enzyme which starts the digestion of starch in the food; the saliva also contains mucus, which lubricates the food, and hydrogen carbonate, which provides the ideal conditions of pH (alkaline) for amylase to work.