Cell Discovery and Theory

Robert Hooke: British Scientist (1665)

• Discovered cork under a microscope.
• Saw a mass of cavities that resembled cells in a monestary.
• Did not realize they were living because he was looking at cell wall of once living tissue.

Anton Van Leeuwenhoek: Dutch Scientist (1675)

• Used a microscope to view living creatures in pond water.

Mattias Shleiden: Germon Botanist (1838)

• Proposed that all plants are made up of cells.

Theodore Schwan: German Zoologist (1839)

• Stated that all animals are made up of cells.

Rudolph Virchow: German Physican (1858)

• Determined that cells come only from other cells and must be like the original.

Cell Theory

1. All living things are made of cells.
2. Cells are the basic units of structure and function in organisms.
3. All Cells arise from existing cells.