Mitochondria are the storehouses of :

Options

A. ATP
B. glucose
C. glycogen
D. fats

Explanation

**Step-by-Step Solution:**

1. **Understanding Mitochondria**: Mitochondria are known as the "powerhouse of the cell." They play a crucial role in energy production within the cell.

2. **Energy Production**: The primary function of mitochondria is to generate ATP (adenosine triphosphate), which is the energy currency of the cell. ATP is essential for various cellular processes that require energy.

3. **Krebs Cycle**: Mitochondria are involved in the Krebs cycle (also known as the citric acid cycle), where glucose is oxidized. This process leads to the production of energy-rich molecules like NADPH and ATP.

4. **Electron Transport Chain**: After the Krebs cycle, the energy carriers (NADPH and FADH2) enter the electron transport chain located in the inner membrane of the mitochondria. Here, ATP is synthesized through a process called oxidative phosphorylation.

5. **Storage of ATP**: Mitochondria store the ATP molecules produced during these processes. This stored ATP can be utilized by the cell whenever energy is required.

6. **Conclusion**: Therefore, mitochondria are specifically the storehouses of ATP. Other substances like glucose, glycogen, and fats are not stored in mitochondria; they serve different roles in cellular metabolism.

**Final Answer**: Mitochondria are the storehouses of ATP.

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