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| Description: Sperm: designed to reach and penetrate the secondary oocyte in order to achieve fertilization and create a zygote. The head contains a nucleus with 23 chromosomes. The acrosome covers the head and contains enzymes to help with penetration. The neck contains centrioles that form the microtubules that make up the rest of the tail. The middle piece contains mitochondria that make ATP for locomotion of the sperm. The principal piece and end piece make up the tail used for movement. Picture Stats: Views: 175 Filesize: 225.59kB Height: 895 Width: 588 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=40553 |