1.1.5 Microscopy

• What is the difference between magnification and resolution?

  ● Magnification = number of times bigger image is compared to real object

  ● Resolution = shortest distance between 2 points that can be seen as separate points (level of detail)
• What is the difference between light and electron microscopes?

  ● Image formed using light in a light microscope, but electrons in an electron microscope

  ● Magnification higher in electron microscopes

  ● Resolving power (resolution) higher in electron microscopes

  ○ So can study cells in much finer detail / see more sub-cellular structures eg. ribosomes
• Why is this statement wrong?

  “An electron microscope is a microscope that uses electricity.”

  Electricity and electrons are not the same thing.

  An electron microscope uses electrons to form an image.
• Why is this statement wrong?

  “An electron microscope focuses better, or is clearer.”

  This is too vague and is not a sufficient alternative to ‘higher resolution

  and magnification’.
• Suggest why ribosomes cannot be seen

  through a light microscope. (1)

  ● Too small

  ● Do not have sufficient magnification or resolution