1. Cell Unit Introduction Microscopes & Cell Theory

2. Robert Hooke 4 1665 4 British Scientist 4 Described the empty chambers of cork as “cells” 4 His microscope could magnify 30X

3. The Robert Hooke Microscope 4 One of the 1st compound microscopes used by Hooke

4. Anton Von Leeuwenhoek 4 1673 4 Dutch drapery store owner, ground lenses as a hobby 4 Made 1 of the 1st microscope (magnifying glasses) with 275X 4 1st person recorded to view microscopic organisms and living cells

5. A remaining sketch of Leeuwenhoek’s microscope 4 He used a microscope similar to this one to make several discoveries 4 Including: bacteria, protists, blood cells, and nematodes

6. Matthias Schleiden 4 1838 4 German botanist 4 Concluded that plants are products of their cells

7. Theodor Schwann 4 1839 4 German zoologist 4 Reported animals are made of cells 4 Proposed a cellular basis of life

8. Rudolf Virchow 4 1855 4 German physician 4 Studied how disease affects living things 4 stated “the animal arises only from animal and the plant only from a plant”

9. Cell Theory 4 1. Cells are the basic unit of life 4 2. All organisms are made of cells 4 3. All cells are formed from existing cells 4 Combined work of Schleiden, Schwann, &Virchow

10. Works Cited 4 http://www.ucmp.berkeley.edu/history/leeuwenhoek.html 4 http://micro.magnet.fsu.edu/optics/timeline/people/hooke.h tml