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Aristotle's major biological works, including On the Generation of Animals, raised fundamental questions about reproduction, development, and heredity. By recognizing the value of studying organisms , Aristotle started an approach to philosophy and biology.
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The invention of the micropscope made it possipble to view cells.
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Robert was the first to discover cells in a thin sliver of cork and descrbed them as cells.
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Van helmont agued against cell theory and was a suporter of spontanious generation and this delays the development of the cell theory
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Anoton was the first to see and describe bacteria in a microscope
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He believed that there were tiny units of life called infusoria that make up the human skin, bones, and organs.
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Robert brown first looks at and discovers the necleus of a cell.
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This prooves that animals come from other animals.
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believed that all animals where madde of one or more cells just as Theodor Schwann also did.
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Albrecht von Roelliker discovered that sperm and eggs where also cells.
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Rudeolf determined that every cell has been created from another cell through cell division. also observed that disease come from changed or mutaded cells.
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Louis Pasteur did an experiment that determined that soup exposed to air only spoiled if the air was not filtered or if the flask containing the soup had an opening that allowed micro organisms to get to the soup and determined and created pasturization
