cells specialisation

• how are sperm cells specialised for reproduction?

  • long tail & streamlined head to help swim
  • has lots of mitochondria to provide energy needed
  • carries enzymes in its head to digest through egg cell membrane
• how are nerve cells specialised for rapid signalling?

  • cells are long ( to cover more distance)
  • have branched connections at their ends to connect to other nerve cells to form a network in the body
  • easier to carry electrical signals through the body
• how are muscle cells specialised for contraction?

  • cells a are long (so they have space to contract)
  • contain lots of mitochondria to generate energy needed for contraction
• how are phloem and xylem cells specialised for transporting substances?

  • form tubes - transport substances such as food and water
  • the cells are long and joined need to end
  • xylem cells are hollow in the centre
  • phloem cells have very few sub cellar structures so stuff can flow through them