1. 4-1 THE HISTORY OF CELL BIOLOGY

2. THE DISCOVERY OF CELLS  Cell – the smallest unit of life that can carryout all of the processes of life

3. THE DISCOVERY OF CELLS  There were many different contributions that led to our current understanding of cells

4. THE DISCOVERY OF CELLS  Robert Hooke

5. THE DISCOVERY OF CELLS  Robert Hooke  English Scientist

6. THE DISCOVERY OF CELLS  Robert Hooke  English Scientist  1665 – looked at cork under a microscope and saw little boxes; called them “Cells”

7. THE DISCOVERY OF CELLS  1665 – looked at cork under a microscope and saw little boxes; called them “Cells”

8. THE DISCOVERY OF CELLS  Anton van Leeuwenhoek

9. THE DISCOVERY OF CELLS  Anton van Leeuwenhoek  Dutch trader; made microscopes

10. THE DISCOVERY OF CELLS  1673 – saw first living organisms in pond water; called them “animalcules”

11. THE DISCOVERY OF CELLS  Matthias Schleiden

12. THE DISCOVERY OF CELLS  Matthias Schleiden  German Botanist

13. THE DISCOVERY OF CELLS  1838 – all plants are composed of cells

14. THE DISCOVERY OF CELLS  Theodor Schwann

15. THE DISCOVERY OF CELLS  Theodor Schwann  German zoologist

16. THE DISCOVERY OF CELLS  1839 – all animals composed of cells

17. THE DISCOVERY OF CELLS  Rudolf Virchow

18. THE DISCOVERY OF CELLS  Rudolf Virchow  German physician

19. THE DISCOVERY OF CELLS  1855 – Cells come from other cells

20. THE DISCOVERY OF CELLS  1855 – Cells come from other cells

21. THE DISCOVERY OF CELLS  The Cell Theory

22. THE DISCOVERY OF CELLS  The Cell Theory 1. All living things are composed of one or more cells.

23. THE DISCOVERY OF CELLS  The Cell Theory 2. Cells are the basic unit of structure and function

24. THE DISCOVERY OF CELLS  The Cell Theory 3. Cells come only from the reproduction of existing cells