Write the special functional activity of the following structures. For example :Kidney and `ul"excretion"`.
Mitochondria and ……….

Explanation

**Step-by-Step Solution:**

1. **Identify the Structure**: The structure we are focusing on is the mitochondria.

2. **Understand the Function**: Mitochondria are known as the "powerhouse of the cell." This is because they are primarily responsible for producing energy in the form of ATP (adenosine triphosphate) through the process of cellular respiration.

3. **Describe the Process**: The main process that occurs in mitochondria is aerobic respiration. This process involves several stages:
- Glycolysis: This occurs in the cytoplasm where glucose is broken down into pyruvate.
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