sperm and egg cells

• .....

  A) acrosome

  B) nucleus

  C) centrioles

  D) mitochondria

  E) flaggellum

  F) head

  
• sperm cell nucleus has 23 chromosomes (haploid nucleus)
• sperm head - acrosome
• acrosome- enzymes to digest a path through the outer membrane (zona pellucida) of egg
• The male sex cell or spermatozoon consists of three main parts; the head, mid-piece and tail.
• the mid-section contains large numbers of mitochondria for aerobic respiration
• ...

  A) corona radiata

  B) cytoplasm

  C) zona pellucida

  D) nucleus

  
• the corona radiata is a protective layer that provides proteins to fertilized egg
• the nucleus contains genetic material (chromosomes)
• the zona pellucida is an impermeable barrier which prevents entry by other sperms
• egg nucleus is haploid (23 chromosomes)
• zona pellucida- outer membrane of egg cell