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Biology - Coggle Diagram

- - - - Light is at the bottom part of the microscope, and a thin layer of the sample is placed on the stage
    - - An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination.
  - - - ‘Pro’ means before; ‘karyon’ means nucleus.
      - Simple in structure – for example, their DNA lies free in the cytoplasm (lack nuclei)
      - No organelles
      - (organelle: Structure within a cell that is surrounded by a membrane (membrane-bound) and has a specific function for cell survival)
      - They are, on average, about 1000 to 10 000 times smaller in volume than eukaryotic cells.
      - Organisms with prokaryotic cells are unicellular and part of kingdom MONERA (Bacteria and Archaea).
    - - ‘Eu’ means true.
      - Their DNA lies inside a nucleus.
        
        Animals, plants, fungi and a group containing most of the unicellular eukaryotes known as protoctists.
      - Most biologists believe that eukaryotes evolved from prokaryotes, 1500 million years after prokaryotes first appeared on Earth.
    - - Only Animal cell
      - Only Eukaritic cell
      - Only plant cell