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Zacharias Janssen invented the first compound microscope by putting two convex lenses in a tube none. (n.d.). Cell Theory page page. Retrieved September 18th, 2015 from http://www.cpschools.com/schools/osm/theory.htm
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Robert Hooke discovered cells as the building blocks of life while examining a peice of cork. He wrote a book about his theory of the cell and it was published in 1665. Source:
House, Paul. (September 9th, 2009) Robert Hooke and The Discovery of the Cell page. Retrieved September 20, 2015 from http://www.science-of-aging.com/timelines/hooke-history-cell-discovery.php -
Anton van Leeuwenhoek created a more practical microcope which was able to magnify more than Janssen's. Leeuwenhoek also was the first to see bacteria and be able to describe it. Source:
none. (n.d.). Contributions to Cell Theory page. Retrieved September 20, 2015 from https://www.preceden.com/timelines/46013-contributions-to-cell-theory -
Matthias Schleiden studied plants under microscopes and discovered that plant were made of cells. He also recognized that cells had different parts and that the nucleus was very important. Source:
Editors of Encyclopedia Britannica. (November 11th, 2014). Matthias Jacob Schleiden page. Retrieved September 20, 2015 from http://www.britannica.com/biography/Matthias-Jacob-Schleiden -
Theodor Schwann was a zoologist and discovered that all animals were made out of cells by studying different types of animal tissue. Source:
none. (n.d.). Theodor Schwann page. Retrieved September 20, 2015 from http://www.famousscientists.org/theodor-schwann/ -
Virchow discovered that cells come from other existing cells while he was doing experiments with disease. Source:
none. (n.d.). Rudolph Virchow page. Retreived on September 20th, 2015 from http://www.famousscientists.org/rudolf-virchow/ -
- All living things are made up of cells
- Cells are the basic units of structure and function of living things
- Living cells come only from other living cells
