Lysosomes have

Options

A. Hydrolases active at acidic pH
B. Lipases and proteases only
C. Hydrolases active at pH=7
D. Hydrolases active at basic pH

Answer

To solve the question "Lysosomes have?", we need to analyze the options provided and understand the characteristics of lysosomes.

### Step-by-Step Solution:

1. **Understanding Lysosomes**:
- Lysosomes are membrane-bound organelles found in animal cells. They contain digestive enzymes that break down waste materials and cellular debris.

2. **Identifying the Enzymes in Lysosomes**:
- The enzymes found in lysosomes are known as hydrolases. These enzymes are responsible for hydrolysis, a chemical process that involves the breakdown of compounds by the addition of water.

3. **pH Conditions for Lysosomal Enzymes**:
- Lysosomal enzymes, particularly hydrolases, are most active at an acidic pH. The interior of lysosomes is acidic (typically around pH 4.5 to 5.0), which is optimal for the activity of these enzymes.

4. **Evaluating the Options**:
- **Option A**: Hydrolases active at acidic pH - This is correct because lysosomal enzymes function best in acidic conditions.
- **Option B**: Lipases and proteases only - This is incorrect as lysosomes contain a variety of hydrolases, not just lipases and proteases.
- **Option C**: Hydrolases active at pH 7 - This is incorrect because hydrolases in lysosomes are not optimally active at neutral pH.
- **Option D**: Hydrolases active at basic pH - This is incorrect because lysosomal enzymes are not active in basic conditions.

5. **Conclusion**:
- Based on the analysis, the correct answer is **Option A: Hydrolases active at acidic pH**.