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350
Aristotle classifies how complex animals are.
Time 350 BC. By classifying how complex animals are the theory that animals can spontaniously generate is proven false. -
Zacharias Janson invented the microscope.
The microscope made it possible for people to observe cells. This called spontanious generation to be disproverd. -
Robert Hooke discovered cells.
Hooke was the first to observe cells by observing a peice of cork. Without him many cells wouldnt have even been discovered. -
Jan Baptist van Helmont
Van Helmont was the scientist that argued augenst cell theory and was a big supporter of spontanious generation. This would delay the development of cell theory. -
Anton van Leeuwenhoec. improves microscope
Van Leeuwenhoec uses his improved version of the microscope to observe a sample of pond water and become one of the first to observe bacterium and he discovered single celled organisms. which helped to prove the cell theory. -
Laurenz Oken expands the buleif of the cell theory
Oken buleived that tiny units of life called infusoria made up human skin, bones, and organs. This proves how human form from cells. -
Robert Brown discovers the nucleus.
By discopvering that cells have a nucleus Brown proved that cells come from one or more other cells. -
Theodor Schwann concluded that animals are made from cells.
This proves that an animal has to come from other animals not from a nonliving thing. -
Matthias Schleden co founded the cell theory.
Schleden co founded the cell teory and publshed a book on how leaves were made from cells. -
Louis Pasteur disproved spontanious generation.
Pasteur disproved spontanious generation by heating up two containers of broth and sealed one of them. The cells only grew in te open one thus proving that cells come from other cells. -
Rudolf Virchow suppors cell theory
Rudolf stated that a cell can only be created from another cell. He also published a book titled " Every Cell Originates From Another Existing Cell Like It". -
Alberecht von Roelliker
Alberecht relized that sperm ans eggs have cells proving that animals come from reproduction.
