Question

What is the role of acid in our stomach?

• A. Acidify the food for proper action of pepsin
• B. Conversion of pepsinogen and prorenin into active forms of pepsin and renin
• C. Killing of microorganisms present in food
• D. All of the above

Answer 1

The correct option is D All of the above

The gastric juice is made up of hydrochloric acid, pepsinogen and other digestive enzymes, gastrin, mucus, and bicarbonates. It has a pH ranging from 1 to 2. Its low pH is essential in activating digestive enzyme such as pepsinogen and convert it into the active pepsin, a Proteolytic activity of pepsin and in destroying various pathogens.

Thus, the correct answer is option D.