Pepsinogen is converted into pepsin due to:
Correct answer: A. Low pH
- A. Low pH
- B. High pH
- C. Optimum temperature
- D. Freezing temperature
Explanation
Pepsinogen is activated to pepsin by the low pH created by HCl in the stomach, and the pepsin formed then activates more pepsinogen. A high pH would keep it inactive, which is why pepsin stops working once food enters the alkaline duodenum.
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About Human Digestive System
The human digestive system breaks food into absorbable molecules through mechanical processing, enzyme action and chemical conditions along the alimentary canal. Questions cover the mouth, stomach, small and large intestines, liver, pancreas and associated secretions, including the digestion and absorption of carbohydrates, proteins, lipids, vitamins, minerals and water.
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