Question

The mobility of a mature sperm is controlled by the mitochondria located in the

• A. Head
• B. Middle piece
• C. Tail
• D. All of the above

Answer 1

The correct option is B Middle piece

The sperm is composed of a head, neck, a middle piece and a tail. A plasma membrane envelops the whole body of sperm. The sperm head contains an elongated haploid nucleus, the anterior portion of which is covered by a cap-like structure, acrosome. The acrosome is filled with enzymes that help fertilization of the ovum. The middle piece possesses numerous mitochondria, which produce energy for the movement of the tail, that facilitate sperm motility, essential for fertilization.