Specialised Cells

• Egg cell adaptations:

  • Nutrients in the Cytoplasm - provides embryo with raw materials and energy for growth and development
  • Haploid Nucleus - contains half the chromosomes needed
  • Changing Cell Membrane after Fertilisation - becomes hard to prevent more sperm cells entering
• Sperm Cell adaptations:

  • Acrosome (tip) - contains enzymes that break down egg cell's jelly coat so sperm can enter
  • Haploid Nucleus - contains half the chromosomes needed
  • Many Mitochondria (middle) - releases energy for the tail
  • Tail - moves side to side so sperm can swim
• Ciliated Epithelial Cells have hair like cilia that line structures and sweep substances along by moving side to side.
• The function of the egg cell is to carry female DNA and supply the embryo with nutrients in its early stages.
• The function of the sperm cell is to carry male DNA to the female's egg.