Principles of Organisation

• What are the levels of biological organization from cells to organ systems?

  • Cells make up all living things.
  • Tissues are groups of specialized cells.
  • Organs are formed from different tissues.
  • Organ systems consist of organs working together.
• What are cells?


  Basic units of life.
• What are tissues?


  Groups of cells that work together to perform a specific function.
• What are organs?


  Structures in the body that perform specific functions.
• What are organ systems?


  Groups of organs that work together to perform specific functions in the body.