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Period: 300 to
Spontaneous generation to cell theory
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Nov 7, 1500
Spontaneous Generation
When people still thought living things came from nonliving things. -
Period: Nov 7, 1500 to
Cell Theory Developement
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Invention of First Microscope
Zacharias JansenZacharias Jansen invented the first compound microscope. -
Contribution to Photosynthesis
Jan Baptist van Helmont contibuted to photosynthesis by proving plants didnt get their food thruogh the soil. Jan Baptist van Helmont -
Discovery of Cells
Robert Hooke was examining plant material when he noticed tiny cork like structures which he named cells. Robert Hooke -
Invented Microscope
Anton van Leeuwenhoek invented the first practical microscope that allowed him to be the first to see and describe bacteria. Anton van Leeuwenhoek -
Lorenz Oken's Contribution
Lorenz OkenLorenz Oken stated that all organic beings originate from and consist of vesicles or cells. -
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Discovery of cells in Living Things
Theodor SchwannTheodor Schwann stated that all living things are composed of cells. -
Discovery of more cells
Albrecht von Roelliker discovered that sperm cells and egg cells are also cells. Albrecht von Roelliker -
Virchow's Observation
Rudolf Virchow observed that a whole organism does not get sick, just somecells or a group of cells. Rudolf Virchow -
Pasteurization
Louis Pasteur develpoed the process known as pasteurization which kills bacteria helping food stay fresh longer. Louis Pastuer -
Cell Theory
Theory that all living things come from cells. -
Development of Spontaneous Generation
Aristotle came up with the theory of spontaneous generation. Aristotle
