Potential energy is converted into kinetic energy by

Options

A. Chloroplasts
B. Chromoplasts
C. Mitochondria
D. E.R.

Answer

To answer the question "Potential energy is converted into kinetic energy by which cell organelle?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Potential Energy**:
- Potential energy in biological systems often refers to the energy stored in molecules, such as glucose, which is produced during photosynthesis in chloroplasts.

2. **Role of Chloroplasts**:
- Chloroplasts are the organelles in plant cells that convert light energy into chemical energy, specifically in the form of glucose during photosynthesis. This glucose contains potential energy.

3. **Conversion to Kinetic Energy**:
- The potential energy stored in glucose is converted into kinetic energy when glucose undergoes cellular respiration. This process primarily occurs in the mitochondria.

4. **Cellular Respiration**:
- During cellular respiration, glucose is broken down to produce ATP (adenosine triphosphate), which is the energy currency of the cell. The breakdown of glucose releases energy, which can be used for various cellular activities, thus converting potential energy into kinetic energy.

5. **Identifying the Organelle**:
- The organelle responsible for converting the potential energy stored in glucose into kinetic energy (in the form of ATP) is the mitochondria.

6. **Final Answer**:
- Therefore, the answer to the question is that potential energy is converted into kinetic energy by the **mitochondria**.