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Aristotle
Aristotle's major biological works, including On the Generation of Animals, raised questions about reproduction, development, and heredity. By recognizing the value of studying organisms , he started an approach to philosophy and biology. He denied spontaneous generation demonstrated is that life does not currently spontaneously arise in complex form from nonlife in nature. -
Zacharias Jansen
Zacharias Janssen invented the first microscope. This led to the rejection of spontaneous generation because no one knew that you could enlarge unseen things to the human eye. -
Jan Baptist van Helmont
His theory that plants grow from drinking water. He studied plants and his contemporary thoery was that plants grew by eating soil, then discovered plants grow by drinking water. He denied spontaneous generation demonstrated is that life does not currently spontaneously arise in complex form from nonlife in nature. -
Robert Hooke
He observed cork cells using a microscope and sketches appeared of micrographia. He rejected spontaneous generation by finding micrographia in the cork cells. -
Anton Van Leeuwenhoek
He made new, simple microscopes. He rejected spontaneous generation by creating even simpler microscopes to magnify images easier. -
Lorenz Oken
Oken camp up with a new system of animal classification and demonstrted the path of evolution. He rejected spontaneous generation by coming up with evoluton of animals not spontaneous generation. -
Robert Brown
Brown came up with the atomic theory of matter. Describing agitation of microscopic particles suspended in liquid or gas. His theory states matter is composed of small particles in random motion. His observations were published in 1828.He helped lead to the rejection because it showed that there were much smaller things than what we can see with our naked eyes. -
Matthias J Schleiden
Made up part of the cell theory. Discovered that all living things are made of cells. He helped the rejection because he taught us that all living things are made of cells and not of random things. -
Theodor Schwann
Discovered that plants and animals are made of cells. He helped the rejection because he taught us that all living things are made of cells and not of random things. -
Albrecht Von Roelliker
Helped in the development of the cell theory. He carried out research on the nervous systemand documented the between the nerve fibers, cell bodies and they are attatched. He helped the rejection because he taught us that there were conections with nerve fibers and cell bodies. -
Louis Pasteur
Discovered to types crystals. He studied effect of tartaric acid on polarized light and he discovered two types of tartrate crystals in mirror images of each other. he disproved spontaneous generation because If it actually happened, living things would just appear, as opposed to coming from pre-existing living things. -
Rudolf Virchow
He extended work of the cell theory and proposed that living cells must rise from pre-existing cells. He disproved spontaneous generation because If it actually happened, living things would just appear, as opposed to coming from pre-existing living things.
