which of the following is important for conversion of pepsinoges into pepsin?

Options

A. `Fe^(2+)`
B. HCL
C. Bicarbonate ions
D. Enterokinase

Answer

To solve the question regarding the conversion of pepsinogen into pepsin, we can follow these steps:

### Step 1: Understand the Terms
- **Pepsinogen**: This is an inactive form of the enzyme pepsin, which is secreted by the stomach lining.
- **Pepsin**: This is the active form of the enzyme that helps in the digestion of proteins.

### Step 2: Identify the Conversion Process
- The conversion of pepsinogen into pepsin occurs in the stomach. This process is crucial for protein digestion.

### Step 3: Determine the Required Substance
- The conversion of pepsinogen to pepsin requires a specific substance that activates the enzyme.

### Step 4: Identify the Correct Substance
- Hydrochloric acid (HCl) is secreted in the stomach and is essential for this conversion. It lowers the pH of the stomach, creating an acidic environment that activates pepsinogen into pepsin.

### Conclusion
- Therefore, the correct answer to the question is **Hydrochloric Acid (HCl)**.

### Final Answer
- The important substance for the conversion of pepsinogen into pepsin is **Hydrochloric Acid (HCl)**.

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