The Cell

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Chapter 7 cell presentation

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The Cell

  1. 1. THE CELL Chapter 7
  2. 13. Robert Hook (1665) <ul><li>Englishman </li></ul><ul><li>cork </li></ul><ul><li>“cells” </li></ul><ul><li>Compound microscope </li></ul>
  3. 15. Anton van Leeuwenhoek (1660’S) <ul><li>Holland </li></ul><ul><li>Single lens microscope </li></ul><ul><li>Pond water </li></ul>
  4. 17. Cells <ul><li>Basic units of life </li></ul>
  5. 18. Matthias Schleiden (1838) <ul><li>German botanist </li></ul><ul><li>Plant cells </li></ul>
  6. 19. Theodor Schwann (1839) <ul><li>German biologist </li></ul><ul><li>Animal cells </li></ul>
  7. 20. Rudolf Virchow (1855) <ul><li>German physician </li></ul><ul><li>New cells could only come from the division of existing cells </li></ul>
  8. 21. Cell Theory <ul><li>All living things are compose of cells </li></ul><ul><li>Cells are the basic units of structure and function in living things </li></ul><ul><li>New Cells are produced from existing cells </li></ul>
  9. 22. Lots of different shapes and sizes of cells
  10. 25. Sizes <ul><li>5 to 50 micrometers </li></ul><ul><li>How big is a micrometer? </li></ul><ul><li>1m=100cm=1,000,000 micrometers </li></ul><ul><li>1 micrometer=.000001m </li></ul><ul><li>Basically you can’t see it </li></ul><ul><li>Remember: KHDmDCM..micro..nano..pico </li></ul>
  11. 26. Chaos chaos <ul><li>Largest protozoan </li></ul><ul><li>You can see without microscope </li></ul><ul><li>1000 micrometers </li></ul><ul><li>How many meters is this? </li></ul><ul><ul><li>.001 m </li></ul></ul><ul><li>How many centimeters is this? </li></ul><ul><ul><li>0.1 cm </li></ul></ul>
  12. 27. 2 things in every cell… <ul><li>Surrounded by a barrier, cell membrane </li></ul><ul><li>At some point in their life they contain…. </li></ul><ul><ul><li>DNA </li></ul></ul>
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