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Structure of plant and animal cells under an electron microscope

Structure of plant and animal cells under an electron microscope. Advanced Higher Biology Cell and molecular Biology. The Electron Microscope. Two main advantages High resolving power (short wavelength of electrons)

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Structure of plant and animal cells under an electron microscope

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  1. Structure of plant and animal cells under an electron microscope Advanced Higher Biology Cell and molecular Biology

  2. The Electron Microscope • Two main advantages • High resolving power (short wavelength of electrons) • As electrons negatively are charged the beam can be focused using electromagnets • As electrons are absorbed by molecules of air, a near-vacuum has to be created within the chamber of an electron microscope.

  3. The Electron Microscope • Two types • Transmission Electron Microscope (TEM) • Scanning Electron Microscope (SEM) • Activity • Read through the handout on the electron microscope • Answer discussion questions 1 - 4

  4. Comparison of advantages and disadvantages of the light and electron microscopes

  5. Comparison of advantages and disadvantages of the light and electron microscopes

  6. Comparison of pathways of the light and electron microscopes

  7. Ultrastructure of an animal cell as seen through an electron microscope

  8. Ultrastructure of a plant cell as seen through an electron microscope

  9. Pupil Activity • Cell structure • Read through the information on each of the organelles as you colour them in • Follow the guidance on colouring them in given at the bottom of the page • This works on the theory that whilst you are colouring in, you have time to consider and think about the structure and function of the organelles

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