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Hans and Zacharias Janssen
invented the first compound microscope -
Robert Hooke
invented the name cell theory, from looking at the cells through a microscope and looking like cell wals from a prision, he also noticed that cells have the similar structure of a honeycomb -
Francesco Redi
Francesco Redi, an Italian physician, did an experiment to determine if rotting meat turned into flies. He found that meat cannot turn into flies and only flies could make more flies. This was an important experiment because it helped to disprove the theory of spontaneous generation. It did this by showing that the rotten meat did not turn into flies and only flies could make more flies. -
Anton Van Leeuwenhoek
he made the simple microscope and was the first to see and discover bateria -
Lazzaro Spallanzani
From 1765 to 1767 Lazzaro Spallanzani, an Italian abbot and biologist, tried variations on John Needham’s soup experiments. He proved that an micro organism had to be present it couldnt just appear from no where -
Matthias Schleiden
Theodor Schwann and Matthias Jakob Schleiden created what is called the cell theory. The cell theory states that all living things are made up of one or more cells. -
Rudolf Virchow
stated that all disease has a change of normal cells, he said that every cell stems from another cell
Rudolf Virchow published his now-famous aphorism omnis cellula e cellula -
louis Pasteur
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. If he used flasks with long S-shaped necks the micro organisms that spoiled the soup settled in the neck and did not spoil the soup. -
robert brown
discovered the nucleus in plant cells, his profession was an english botanist -
Theodor Schwann
Schwann proposed that all organisms are composed of cells. Together with Matthias Schleiden he formulated the cell theory of life. Schwann also discovered the cells, now known as Schwann cells, that form a sheath surrounding nerve axons and conducted experiments that helped disprove the theory of spontaneous generation.