Why is mitochondria called the power house of the cell?

Explanation

**Step-by-Step Solution:**

1. **Definition of Mitochondria**: Mitochondria are membrane-bound organelles found in the cytoplasm of eukaryotic cells.

2. **Function of Mitochondria**: The primary function of mitochondria is to produce adenosine triphosphate (ATP), which is the energy currency of the cell.

3. **Process of Cellular Respiration**: Mitochondria carry out cellular respiration, a biochemical process that converts the chemical energy stored in food into ATP. This involves breaking down glucose and other nutrients in the presence of oxygen.

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