Biology: The Theory of the Cell Flashcards
What did Aristotle contribute to cell theory?
He created the idea of spontaneous generation through observation.
What did Robert Hooke contribute to cell theory?
He used a microscope to discover cells.
What did Francesco Redi contribute to cell theory?
He discovered that animals reproduce to create more of their species. Spontaneous generation was recategorized to only involve micro-organisms.
What did Antony Van Leeuwenhoek contribute to cell theory?
He discovered single-celled organisms with a microscope.
What did Matthias Jakob and Thomas Schwann contribute to cell theory?
They discovered that all cells have nuclei and that all organisms are made of cells. They also discovered that plants and animals have different cells.
What did Louis Pasteur contribute to cell theory?
He discovered that micro-organisms can be carried in the air but contained with gravity. He discovered that micro-organisms cause fermentation. He also discovered that food and water can be purified by extreme heat.
What did Rudolf Virchow contribute to cell theory?
He proved that cells divided to create new cells in multi-cellular organisms. He proved that if a cell exists then another came before it.
What are the 3 points of the currently accepted Cell Theory?
- All organisms are composed of 1 or more cells.
- The cell is the smallest functional unit of life.
- All cells are produced from other cells
