Which piece of a sperm is called power house ?

Options

A. Head piece
B. Neck piece
C. Middle piece
D. Tail piece

Answer

**Step-by-Step Solution:**

1. **Understanding Sperm Structure**: Sperm cells are male gametes that have a unique structure consisting of several parts: the head, neck, middle piece, and tail.

2. **Identifying the Function of Each Part**:
- **Head**: Contains the genetic material and an acrosome, which helps in penetrating the ovum.
- **Neck**: Contains centrioles, which play a role in cell division.
- **Middle Piece**: This is crucial for energy production.
- **Tail**: Aids in the movement of the sperm.

3. **Focus on Energy Production**: To understand which part is referred to as the "powerhouse," we need to identify where energy is generated for the sperm's movement.

4. **Role of Mitochondria**: The middle piece of the sperm contains spirally arranged mitochondria. Mitochondria are known as the powerhouses of the cell because they generate ATP (adenosine triphosphate), which is the energy currency of the cell.

5. **Conclusion**: Since the middle piece contains these mitochondria that provide energy for the sperm's movement, it is referred to as the "powerhouse" of the sperm.

**Final Answer**: The middle piece of a sperm is called the powerhouse.

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