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6. Disadvantage of both SEMs and TEMs

  • Give a lower resolution than light microscopes
  • Can only be used on non-living things
  • Can only be used on thin specimen

7. During Homogenization the solution is kept isotonic

  • to prevent the movement of water in and out of organelles by osmosis
  • to prevent changes in pH
  • to reduce enzyme activity that break down organelles

8. Which of these microscopes have a higher resolution

  • Electron Microscope
  • Light Microscope

9. Filteration

  • Separating cell debris or tissue debris, like connective tissue, from the organelles.
  • Separating Organelles
  • Breaking up the cells

10. Advantage of SEMs

  • Can be used on thick specimen.
  • Give High Resolution
  • Can only be used on non-living things

11. Isotopic means

  • lower concentration of chemicals compared to the cells being broken down
  • same concentration of chemicals as the cells being broken down
  • greater concentration of chemicals compared to the cells being broken down

12. SEMs stands for

  • Scanning electron microscope
  • Scanning electricity microscope

13. Order of which organelles are separated during ultracentrifugation

  • Nuclei, Mitohondria, Lysosome, ER, Ribosomes
  • Ribosomes, Lysosome, ER, Mitohondria, Nuclei,
  • Lysosome, ER, Nuclei, Ribosomes Mitohondria,

14. TEMs stands for

  • Transmission electron microscope
  • Transmission electricity microscope

15. Ultracentrifugation

  • Separating Organelles
  • Breaking up the cells
  • Getting rid of big bits

16. Advantage of SEMs

  • Can produce 3D images
  • Give low resolution
  • Can only be used on non-living things

17. Which of these microscopes have a higher magnification?

  • Electron Microscope
  • Light Microscope

18. Homogenisation

  • Breaking up the cells
  • Separating Organelles
  • Getting rid of big bits

19. Length of image

  • Magnification * Length of Specimen
  • Magnification / Length of Specimen
  • Length of Specimen / Magnification

20. During Homogenization the solution is kept ice cold

  • to reduce enzyme activity that break down organelles
  • to prevent the movement of water in and out of organelles by osmosis
  • to prevent changes in pH