The antibacterial enzyme, present in the saliva that prevents infections is

Options

A. Maltose
B. Salivary amylase
C. Lysozyme
D. Pepsinogen

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the antibacterial enzyme present in saliva that prevents infections.

2. **Review the Options**: The options given are:
- Maltose
- Salivary amylase
- Lysozyme
- Pepsinogen

3. **Analyze Each Option**:
- **Maltose**: This is a disaccharide made up of two glucose units. It is not an enzyme, so it is not the correct answer.
- **Salivary Amylase**: This is an enzyme present in saliva that breaks down starch into maltose. However, it does not have antibacterial properties, making it an incorrect choice.
- **Lysozyme**: This is an enzyme found in various human secretions, including saliva. It has antibacterial properties as it breaks down the peptidoglycan layer in bacterial cell walls, preventing infections. This is the correct answer.
- **Pepsinogen**: This is an inactive precursor of the enzyme pepsin, which is involved in protein digestion in the stomach. It is not present in saliva and does not have antibacterial properties, making it incorrect.

4. **Conclusion**: Based on the analysis, the correct answer is **Lysozyme**.

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