Содержание
- 2. What is a Cell? A cell is the basic unit of life All organisms are made
- 3. What do we call the study of cells? Cytology But… How can we study cells? The
- 4. Microscopy!!! What types of microscopy do you know?
- 5. Microscopy Terms Magnification is the increase in an object’s image size compared with its actual size.
- 6. The Discovery The progress in cell discovery is associated with the evolution of microscopy. Larger cells
- 7. Major events in cell biology & imaging
- 8. Frog egg Paramecium Human egg Most plant and animal cells Nucleus Most bacteria Mitochondrion Smallest bacteria
- 9. Microscopes reveal the world of the cell In a light microscope (LM), visible light passes through
- 10. What can we see with an LM? Plant cell (non-leaf) Red blood cells Plant cell (leaf)
- 11. Electron microscopes Beginning in the 1930s, scientists started using a very powerful microscope called the electron
- 12. What do they look like? Scanning Electron Microscope Transmission Electron Microscope
- 13. Electron Microscopy Electron microscopes use a beam of electrons to view very small objects. The beam
- 14. Scanning Electron Microscope Transmission Electron Microscope SEMs vs TEMs
- 15. SEMs vs TEMs Scanning electron microscopes (SEMs) show the detailed architecture of cell surfaces. Transmission electron
- 16. Your Task You are going to be given a set of cards with pictures of 8
- 17. Let’s check your conclusions!!
- 18. Nucleus
- 19. RER
- 20. SER
- 21. Golgi Body
- 22. Mitochondria
- 23. Chloroplast
- 24. Lysosomes
- 25. Centrioles/Flagella
- 26. Would you be able to tell which photomicrographs are from… Light microscope?
- 27. Which photomicrographs are SEM?
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