biology paper 1

Cards (5)

  • Light microscope

    • Easy to use, cheap but lower magnification and a low resolution of just 0.2 micrometres so anything less you will not be able to see
  • Electron microscope
    • Expensive, hard to use but uses electrons instead of light, maximum resolution of 0.1 nanometres
  • Light path in light microscope
    Light from room will hit upwards to the stage through the objective lens to the eye, lenses spread out light rays so image we see is larger than the object
  • Magnification
    image size\ object size
  • Organ system
    Group of organs that are present in an organism that carry out specific jobs