Which membrane of chlorolast is more permeable?

Answer

To answer the question "Which membrane of the chloroplast is more permeable?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Chloroplast Structure**:
- Chloroplasts are double-membrane organelles found in plant cells. They consist of an outer membrane and an inner membrane.

2. **Identifying the Membranes**:
- The **outer membrane** is the membrane that surrounds the chloroplast.
- The **inner membrane** is located just inside the outer membrane and encloses the stroma.

3. **Analyzing Permeability**:
- The outer membrane is known to be more permeable compared to the inner membrane. This is due to the presence of porins (protein channels) in the outer membrane that allow the passage of small molecules and ions.

4. **Function of the Inner Membrane**:
- The inner membrane is less permeable and is more selective in what it allows to pass through. It regulates the transport of materials into the stroma, where metabolic processes occur.

5. **Conclusion**:
- Therefore, the outer membrane of the chloroplast is more permeable than the inner membrane.

### Final Answer:
The outer membrane of the chloroplast is more permeable.

---