Which of the following cellular organelles is `//` are bound by a single membrane?
Peroxisomes, Lysosomes, Mitochondria

Options

A. Only peroxisomes but not lysosomes and mitochondria
B. Both peroxisomes and lysosomes but not mitochondria
C. All of the three organelles
D. None of the three organelles

Answer

To determine which of the following cellular organelles are bound by a single membrane, we will analyze each option: peroxisomes, lysosomes, and mitochondria.

### Step-by-Step Solution:

1. **Identify the Organelles**:
- We have three organelles to evaluate: peroxisomes, lysosomes, and mitochondria.

2. **Evaluate Peroxisomes**:
- Peroxisomes are known to be bound by a single membrane. They contain oxidative enzymes that help in various metabolic processes, including the breakdown of fatty acids and detoxification of hydrogen peroxide.

3. **Evaluate Lysosomes**:
- Lysosomes are also bound by a single membrane. They contain digestive enzymes that are responsible for breaking down waste materials and cellular debris.

4. **Evaluate Mitochondria**:
- Mitochondria, on the other hand, are bound by a double membrane. They have an inner and outer membrane, and they are known as the powerhouse of the cell because they generate energy in the form of ATP through cellular respiration.

5. **Conclusion**:
- Based on the evaluations, both peroxisomes and lysosomes are single membrane-bound organelles, while mitochondria are not. Therefore, the correct answer is that peroxisomes and lysosomes are the organelles bound by a single membrane.

### Final Answer:
The organelles that are bound by a single membrane are **Peroxisomes and Lysosomes**.