Inner membrane of mitochondria is permeable to

Options

A. glucose
B. fructose
C. sucrose
D. ATP

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of Mitochondria:**
- Mitochondria have a double membrane structure. The outer membrane is relatively permeable, while the inner membrane is more selective in what it allows to pass through.

2. **Identifying the Permeability of the Inner Membrane:**
- The inner membrane of mitochondria is not permeable to large molecules like glucose, fructose, or sucrose. These sugars are metabolized in the cytoplasm through glycolysis and do not need to enter the mitochondria.

3. **Examining the Role of ATP:**
- ATP (adenosine triphosphate) is produced in the mitochondrial matrix, which is the innermost compartment of the mitochondria. While ATP is produced here, it is essential for cellular functions and needs to be transported out of the mitochondria to be utilized by the cell.

4. **Conclusion:**
- The inner membrane of mitochondria is permeable to certain small molecules and ions, but it is specifically important for the transport of ATP out of the mitochondria to where it is needed in the cell.

**Final Answer:**
The inner membrane of mitochondria is permeable to ATP.

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