HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is/are role(s) of hydrogen ions in gastric juice?I. increases the risk of food poisoningII. converts pepsin to pepsinogenIII. provides an optimum pH for pepsin
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I only
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II only
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III only
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II and III only
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Explanation:
Detailed explanation-1: -Gastric juice is a unique combination of hydrochloric acid (HCl), lipase, and pepsin. Its main function is to inactivate swallowed microorganisms, thereby inhibiting infectious agents from reaching the intestine.
Detailed explanation-2: -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.
Detailed explanation-3: -Final answer: Gastric juice contains pepsin, lipase and rennin.
Detailed explanation-4: -Final answer: Pepsin, lipase, and renin is secreted by gastric juice.
There is 1 question to complete.