Specialised Cells

• define specialised 


  specialised means how they are suited/adapted to doing it’d job/function
• name 3 ways a sperm cell is adapted and what it does


  long tail- to help it move

  lots of mitochondria- to provide energy

  enzyme on tip- to break down ova membrane
• name 2 ways how a nerve cell is adapted and what it does


  long thix axon- to transmit electrical impulses quickly

  lots of dendrites- to allow lots of connections between lots of nerves
• give examples of 3 specialised cells


  muscle cells

  sperm cells

  nerve cells
• how are structures specialised for diffusion?


  1 cell thick

  Large Surface Area

  Good Blood Supply—> to maintain a high concentration gradient
• function of sieve plates


  controls the movement of glucose and minerals