Mitochondria are not found in

Options

A. Mature WBC
B. Mature RBC
C. Nerve cell
D. Sperm

Answer

**Step-by-Step Solution:**

1. **Understanding Mitochondria**: Mitochondria are known as the powerhouse of the cell because they generate ATP, which is the energy currency of the cell. They are present in most eukaryotic cells.

2. **Identifying Cell Types**: The question asks where mitochondria are not found. We need to consider the cell types mentioned: Mature WBC (White Blood Cells), Mature RBC (Red Blood Cells), Nerve Cells, and Sperm Cells.

3. **Analyzing Each Cell Type**:
- **Mature WBC**: White blood cells are involved in the immune response and contain mitochondria to provide energy for their functions.
- **Mature RBC**: Red blood cells are unique because they lose their nucleus and most organelles, including mitochondria, during maturation. This adaptation allows for more space to carry hemoglobin, which is essential for oxygen transport.
- **Nerve Cells**: Neurons require a significant amount of energy for transmitting signals, so they contain mitochondria.
- **Sperm Cells**: Sperm cells also have mitochondria, which provide the energy needed for motility.

4. **Conclusion**: Based on this analysis, the only cell type listed that does not contain mitochondria is the Mature RBC.

5. **Final Answer**: Mitochondria are not found in Mature RBC (Red Blood Cells).

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