organisation

• levels of organisation

  1. organelle
  2. cell
  3. tissue
  4. organ
  5. organ system
• organelle


  A specialised unit within a cell which performs a specific function
• cell

  The basic building block of all living organisms
• tissue


  A group of cells working together to perform a shared function, and often with similar structure
• organ


  A structure made up of groups of different tissues, working together to perform specific functions
• organ system


  A group of organs with related functions, working together to perform certain functions within the body