Cell Theory/Spontaneous Generation
Terms in this set (10)
The first part of the cell theory
All organisms are composed of one or more cells.
The second part of the cell theory
The cell is the basic unit of structure and organization in organisms.
The third part of the cell theory
All cells come from preexisting cells.
Zacharias Jansen came up with the first compound microscope
Anton Van Leewenhoek
Anton Van Leewenhoek came up with the first microscope, and with it he saw bacteria in his teeth. He named the bacteria animalcules because they looked like microscopic animals.
Robert Hooke came up with the word "cell" when he looked up close at a cork, and invented the first microscope, and got in a fight with Isaac Newton.
Matthias Schleiden and Theodor Schwann
Matthias Schleiden and Theodor Schwann were cofounders of the cell theory. Schwann discovered that animals have cells, and Schleiden discovered that plants have cells and that cells come from preexisting cells.
Rudolph Virchow suggested that all cells come from preexisting cells to Schleiden and Schwann, which pretty much ended the theory of spontaneous generation.
Louis Pasteur took two glass flasks and put bacteria in them. He boiled one of them, and then left the flasks out for a little. The un-boiled flask clouded up, and the boiled one didn't, which disproves spontaneous generation because in the one that he boiled, he killed the bacteria that was in there, and no more bacteria spontaneously generated.
Francesco Redi put a type of food in two jars, and covered one of the jars. A bunch of maggots appeared in the jar that was open, but maggots didn't appear in the covered one, which disproves spontaneous generation because no bacteria spontaneously generated.
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