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Zacharias Jansen
Jansen created the first compound microscope, which paved the way to the first statement being discovered. Hans and Zacharias Jansen: A complete microscope history. (n.d.). Retrieved September 20, 2015, from http://www.history-of-the-microscope.org/hans-and-zacharias-jansen-microscope-history.php -
Robert Hooke
Using a microscope, Hooke was able to study a cork closley and see the makeup of the honeycomb like structure, and named these individual units cells. He contributed tomthe first part of the cell theory by doing so. Microscope history: Robert Hooke (1635 - 1703). (n.d.). Retrieved September 20, 2015, from http://www.history-of-the-microscope.org/robert-hooke-microscope-history-micrographia.php -
Anton van Leeuwenhoek
Using a microscope and lenses that he made, he was able to describe cells in a drop of pond water that he was examining. He made single lense miscroscopes. He was the first person to observe bacteria and protozoa, which he discribed in a letter he wrote. He contributed to the making of the cell theory in this way. Discovery of Cells and the Developmwnt of Cell Theory. (n.d.). Retrieved September 20, 2015, from http://www.smithlifescience.com/celltheory.htm -
Robert Virchow
He discovered that all plant cells had a nucleus, and that they used this nucleus to divide and create more cells. He proposed the 3rd part of the cell theory, all cells result from the division of previously existing cells. He used a compound microscope to do so. Discovery of Cells and the Developmwnt of Cell Theory. (n.d.). Retrieved September 20, 2015, from http://www.smithlifescience.com/celltheory.htm -
Mattias Schleiden
One of three German scientists who developed the cell theory. He discovered that the development of all vegetable tissues comes from the activity of cells, and declared that the cell is the basic building block of all plant matter. He also stated that plant growth is from the production of new cells, thus he contributted to the parts of the cell theory. He used a microscope to see these findings in plants. Discovery of Cells and the Developmwnt of Cell Theory. (n.d.). Retrieved September 20, -
Theodore Schwann
A year after Schleiden published his cell theory on plants, Theodore made the discovery that animals are also composed of cells. He came up with the statement saying that the cell is the basic unit of life, and he to used a compound microscope to find this discovery. Discovery of Cells and the Developmwnt of Cell Theory. (n.d.). Retrieved September 20, 2015, from http://www.smithlifescience.com/celltheory.htm -
Cell Theory statements
All living things are composed of one or more cells
Cell is the most basic unit of life
Cells are made from pre-existing cells Bailey, R. (n.d.). Cell Theory. Retrieved September 20, 2015 from http://biology.about.com/od/biologydictionary/g/celltheory.htm
