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Animals Classified
Aristotle was drawn to animal classification and discovered aspects of connection between the soul and the human body. -
First Compound Microscope
Zacharias Jansen made the first compound microscope by combining two convex lenses together. -
Discovery of Cells
Hooke introduced the word "cell" to science and found cells in a cork. -
Protozoa Was Discovered
Leeuwenhoek discovered protozoa. He stated that he saw "little animals" in the microscope. -
Better Microscope Lenses
Leeuwenhoek improved magnification in microscopes by cleaning and polishing the lenses. -
Animalcules
Leeuwenhoek discovered animalcules, a microscopic or minute organism, like an amoeba or paramecium, usually considered to be an animal. -
Bacteria Discovered
LEeuwenhoek discovered bacteria from a sample of saliva from his own mouth. -
Classification of Animals
Lorenz Oken came up with a new and improved animal classification. -
Spontanous Generation
Louis Pasteur set out to disprove spontaneous generation with a now classic experiment that both firmly established the cell theory beyond doubt and solidified the basics steps of the modern scientific method. -
Plant Cells
Schleiden discovered that plants were made up of cells. He was the first to realize this. -
Animal Cells
Schwann discovered that animals were composed of cells. -
Sperm and Egg Cells
Roelliker realized that sperm cells and egg cells both are also classified as cells. -
Cell Theory
Virchow, Schleiden and Schwann all made up the cell theory. Schleiden discovered plant cells, Schwann discovered animal cells and Virchow found that all cells come from other existing cells. -
Mitochondria Discovered
Killiker discovered and described the mitochondria, part of a cell. -
Chromosome
Flemming described chromosome behavior during mitosis.
