Which is true about pepsin?
Correct answer: A. It is produced in inactivated form
- A. It is produced in inactivated form
- B. It is produced form esophagus
- C. It requires basic medium
- D. It is an apoenzyme
Explanation
Option A is correct as pepsin is a protease which is produced in its inactive form as pepsinogen by the chief cells. HCl present in the stomach activates pepsinogen to pepsin which then breaks down large protein. Option B is incorrect as pepsin is produced in its inactive form by zymogen cells present in the stomach walls. Option C is incorrect because pepsin which is produced in its inactive form requires an acidic medium provided by HCl to activate it. Option D is incorrect as pepsin is the active form of pepsinogen which is an inactive enzyme. Therefore, it is not an apoenzyme.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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