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Gastric enzyme pepsin acts only in acidi...

Gastric enzyme pepsin acts only in acidic medium with in a limited pH concentration. It varies `:`

A

1.20 to 1.80

B

1.00 to 1.50

C

2.00 to 2.50

D

1.50 to 2.60

Text Solution

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The correct Answer is:
To solve the question regarding the pH range in which the gastric enzyme pepsin acts, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Function of Pepsin**: - Pepsin is a gastric enzyme that plays a crucial role in the digestion of proteins in the stomach. 2. **Identify the Form of Pepsin**: - Pepsin is secreted in an inactive form known as pepsinogen. 3. **Activation of Pepsin**: - Pepsinogen is activated to pepsin by hydrochloric acid (HCl), which is secreted by the gastric cells in the stomach. 4. **Determine the pH Requirement**: - Pepsin operates optimally in an acidic environment. The effective pH range for pepsin activity is critical for its function. 5. **Analyze the Given Options**: - The options provided are: - 1.20 to 1.80 - 1 to 1.50 - 2 to 2.50 - 1.50 to 2.60 6. **Select the Correct pH Range**: - Based on biological knowledge, pepsin functions best in a highly acidic environment, specifically within the pH range of **1.50 to 2.60**. 7. **Conclusion**: - Therefore, the correct answer is **1.50 to 2.60**. ### Final Answer: The gastric enzyme pepsin acts only in an acidic medium with a limited pH concentration that varies from **1.50 to 2.60**. ---
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