biology paper 1

• Stages of mitosis


  1. Nucleus dissolves

  2. Genetic material is duplicated

  3. Two sets of chromosomes move to opposite sides of the cell

  4. Organelles are duplicated

  5. Cell divides producing two genetically identical diploid cells
• Diffusion


  Movement of particles from an area of high concentration to an area of low concentration, down the concentration gradient, passive and doesn't require energy