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Period: 500 BCE to
Cell theory
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384 BCE
Aristotle
(BC) Aristotle idea was about germs and how they have come from another. The example he used was in gene and how parents would pass on to offspring and it was a version of his idea about the germs. He idea contributed cells came from other descendants from other cells and this proved that there was no spontaneously generation.
http://www.smithlifescience.com/celltheory.htm -
Zacharias Janssen
Was know for making the compound optical microscope by combining two more convex lenses and this help observe cells in the microscope. It also help reject the idea of spontaneous generation because it help scientist observe the cell.
http://www.history-of-the-microscope.org/hans-and-zacharias-jansen-microscope-history.php -
Jan Baptiste van Helmont
Jan Baptiste van Helmont was know for many things but the main thing was that he found carbon dioxide.He also believed in spontaneous generation and the finding help his believe.
https://www.britannica.com/biography/Jan-Baptista-van-Helmont -
Robert Hooke
Robert Hooke first started observing cork and he discovered that that inside of it had empty walls and he called them pores.When he discovered this wanted to check it on other thing and he choose a plant and proved the cell theory right and help reject spontaneous generation because he studied cells and how Aristotle was right about how they do come from a descendent.
https://www.science-of-aging.com/timelines/hooke-history-cell-discovery.php -
Anton Van Leeuwenhoek
Anton Van Leeuwenkoek was know for find a single cell organism in a pond called animalcules. Another thing he was known for being the first people to observe bacteria cells. The research that he made help the idea of spontaneous generation because in his work documented how cells developed and how they reproduce.
http://study.com/academy/lesson/anton-van-leeuwenhoek-biography-cell-theory-discoveries.html -
Lorenz Oken
Lorenz Oken was known for his quote which is "All living organisms originate from and consist of cells". This quote help prove the idea that cells had ancestors and help reject the idea spontaneous generation because they knew how cells worked and how they reproduce and passed on from another to another cell
http://www.lorenzoken.com -
Robert Brown
Robert Brown was know for discovering the nucleus and cytoplasmic streaming of a plant.This help reject the idea of spontaneous generation he saw how the cell managed to reproduce in the nucleus .
https://www.britannica.com/biography/Robert-Brown-Scottish-botanist -
Theodor Schwann
Theodor Schwann was know for research and stating that all animal tissue mad out of cells.It contributed the rejection of spontaneous generation because he saw that cells came from previous ancestors.
https://www.britannica.com/biography/Theodor-Schwann -
Matthias Schleiden
Matthias Schleiden discovery that plants had cells and other parts of cells in the plant. After this he stated that all living thing are all made of 1 or more living cells. Proved one again that spontaneous generation.
education.seattlepi.com/major-contribution-matthias-schleiden-microbiology-4908.html -
Albrecht Von Roelliker
Albrecht Von Roelliker research and discovered the sperm and egg from the reproductives system are cells. The reject spontaneous generation because showed how the reproductive system work -
Rudolph Virchow
Rudolph Virchow published aphorism omnis cellula and the main idea was that states every stem cells comes from a descendent.This reject the idea of spontaneous generation because the stem cell has a descendent.
https://www.britannica.com/biography/Rudolf-Virchow -
Louis Pasteur
Louis Pasteur was known for being the first scientist to proof cells can only form a pre existing cells by making an experiment. The experiment was soup was exposed to air that was not filtered. This help reject spontaneous generation.
www.biography.com/people/louis-pasteur-9434402
