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The cell theory and the microscopes 4º ESO IES Pedro de Luna -ZARAGOZA
- 1. The cell theory and the microscopes By: Marina Járboles, Cristina Alierta and Pilar Ballesteros.
- 3. The cell theory • Formulated by: • Other scientists that contributed:
- 4. The cell theory • It states that: • 1) All living things are made up of cells.
- 5. • 2) Cells are the basic structural and functional unit of life.
- 6. • A good example will be this dog:
- 7. • 3) Cells come from pre-existing cells by division.
- 8. New statements: • 4) Energy flow occurs within cells. Reaction of cellular respiration
- 9. • 5) Hereditary information (DNA) is passed on from cell to cell.
- 10. • Eukaryotic cells division • Prokaryotic cells division:
- 11. • 6) All cells have the same basic chemical composition.
- 12. Activity • Say which of this statements belong to the original theory and which ones are new: • Cells come from pre-existing cells by division. • All cells have the same basic chemical composition. • Hereditary information (DNA) is passed on from cell to cell. • All living things are made up of cells. • Cells are the basic structural and functional unit of life. • Energy flow occurs within cells.
- 13. Answer • Original theory: • Cells come from pre-existing cells by division. • All living things are made up of cells. • Cells are the basic structural and functional unit of life. • New statements: • Energy flow occurs within cells. • All cells have the same basic chemical composition. • Hereditary information (DNA) is passed on from cell to cell.
- 14. Important scientists in cell theory • 1) Robert Hooke • 2) Antony Van Leeuwenhoek • 3) Robert Brown • 4) Mattias Schleiden • 5) Theodor Schwann • 6) Rudolph Virchow
- 15. 1. Robert Hooke • 1635-1703
- 16. • In 1665 he published “Micrographia”
- 17. •The first to identify and name a cell
- 18. 2. Antony Van Leeuwenhoek • 1632-1723 • Made better lenses
- 19. Red blood cells as he saw them White blood cell •The first to observe a living cell
- 20. Bacteria in his saliva Dog sperm Human sperm
- 21. 3. Robert Brown • 1773-1857 • He discovered the nucleus of cells
- 22. 4. Mattias Schleiden • 1804-1881 • First to note that all plants were made up of cells
- 23. 5. Theodor Schwann • 1810-1882 • Concluded that all living things were made up of cells
- 24. 6. Rudolph Virchow • 1821- 1902 • Proposed that cells come from other cells
- 25. Cell theory • 1. All living things are made up of cells. • 2. Cells are the basic structural and functional unit of life. • 3. Cells come from pre-existing cells by division.
- 26. • This is how an eukaryotic animal cell would look like:
- 27. Activity • Say the name of the scientists who contributed with the cell theory in order
- 28. Answer • 1. Hooke • 2. Van Leeuwenhoek • 3. Brown • 4. Schleiden • 5. Schwann • 6. Virchow
- 29. Major contibutions to the cell theory • Say how do you think each scientist contributed to the creation of the cell theory: • Hooke • Van Leeuwenhoek • Brown • Schleiden • Schwann • Virchow
- 30. Major contibutions to the cell theory • Hooke: The first to identify and name a cell • Van Leeuwenhoek: Made better lenses and was the first to observe a living cell • Brown: He discovered the nucleus of cells • Schleiden: First to note that all plants were made up of cells • Schwann: Concluded that all living things were made up of cells • Virchow: Proposed that cells come from other cells
- 31. The microscopes
- 32. Definition
- 33. History of microscopes • 1st century AD • Magnifiers
- 34. • 1590’s • Zacharias Janssen and his father Hans
- 35. • Antony Van Leeuwenhoek
- 36. • Hooke
- 37. True or false • Hooke was the first man to make a real microscope • Hooke was the first man to use a three- lens configuration in a microscope • There are still some Jansen’s microscopes • Romans invented microscopes
- 38. • Hooke was the first man to make a real microscope: False • Hooke was the first man to use a three- lens configuration in a microscope: True • There are still some Jansen’s microscopes: False • Romans invented microscopes: False
- 40. 1. Optical microscopes • 1.1 Compound microscope • 1.2 Stereo microscope • 1.3 Confocal microscope
- 41. 1.1 Compound microscope Fresh water shrimp, Gammarus
- 42. 1.2 Stereo microscope Cell division in a frog’s egg
- 43. 1.3 Confocal microscope Aquatic worm
- 44. Activity • Join the microscope name with its picture Confocal microscope Stereo microscope Compound microscope
- 45. Answer Confocal microscope Stereo microscope Compound microscope
- 46. 2. Electron microscopes 2.1 Transmission Microscope 2.2 Scanning Electron Microscope 2.3 Reflection Electron Microscope
- 47. 2.1 Transmission electron Microscope Lung tissue
- 49. Activity • Join the microscope name and the image you can see through it Scanning electron microscope Transmission electron microscope
- 50. Answer Scanning electron microscope Transmission electron microscope
- 51. 2.3 Reflection Electron Microscope • 2.3.1 X-ray Microscope • 2.3.2 Scanning Helium Ion Microscope • 2.3.3 Scanning acoustic microscope • 2.3.4 Scanning Probe Microscopes
- 53. 2.3.2 Scanning Helium Ion Microscope
- 55. 2.3.4 Scanning Probe Microscopes Purple membrane
- 56. Activity • Join the microscope name with its picture • X-ray Microscope • Scanning Helium Ion Microscope • Scanning acoustic microscope • Scanning Probe Microscopes
- 57. Answer • Join the microscope name with its picture • X-ray Microscope • Scanning Helium Ion Microscope • Scanning acoustic microscope • Scanning Probe Microscopes
- 58. • Now lets see if you can solve this crossword:
- 59. • Finally lets see if you remember some of the microscope parts:
- 60. The end