Cell Theory

Robert Hooke-1665 He looked at cork cells. One of the first people to see cells. He looked at cork cells. Hooke came up with the term cell.

Identified and named cells Hooke’s Contribution: Identified and named cells

Anton van Leeuwenhoek - 1674 Developed a single-lens microscope that was much more powerful than Hooke’s. 1674 – Leeuwenhoek became one of the first people to describe living cells when he observed numerous single-celled organisms swimming in a drop of pond water

Leeuwenhoek’s Contribution: He could see greater detail due to better microscope lenses and was the first to observe living cells.

   Matthias Schleiden     1838 Concluded that all plants are made up of cells. Schleiden’s Contribution:

Theodore Schwann 1839 Concluded that all living things are made up of cells. Schwann’s Contribution:

Reported that all cells come from pre-existing cells Rudolf Virchow - 1855 Virchow’s Contribution: Reported that all cells come from pre-existing cells

Cell Theory All living things are made up of cells. All cells come from other living cells. Cells are the most basic unit of life. There is nothing living that is smaller than a cell.