1. How would you describe what you see below to someone else?

2. Robert Hooke 1665 Viewed “cork” slices under the microscope

3. Described what he saw as a “cell”

4. Anton von Leeuwenhoek (1667) Looked at pond water under the microscope Discovered “animalcules”

5. Henry Dutrochet Early 1800’s All living things are made of cells

6. Robert Brown 1831 Discovered the nucleus

7. Matthias Schleiden 1838 Viewed plant cells under the microscope

8. Viewed animal cells under the microscope Theodor Schwann 1839

9. Johannes Purkinje 1839 Discovered cell “jelly” cytoplasm

10. Rudolph Virchow 1855 Cells divide to become other cells

11. Max Schultze 1861 All cells have cytoplasm

12. Felix Dujardin 1861 Discovery of one-celled organisms