2.2. Cells are alive and the basic living units of organization in all organisms.
2.3. All cells come from other cells
3. Experiments
3.1. Antoni van Leeuwenhoek (1632-1723), created the microscope.
3.2. Robert Hooke (1635-1703), found bacteria, or “little animals”.
3.3. Matthias Jakob Schleiden (1804-1881), who looked at numerous plant samples. Schleiden was the first to recognize that all plants, and all the different parts of plants, are composed of cells
3.4. Theodore Schwann (1810- 1882), published "Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals," which included the first statement of the cell theory: All living things are made up of cells.
3.5. Rudolf Virchow (1821- 1902), proposed that all living cells must rise from pre-existing cells
3.6. Louis Pasteur (1822- 1895), created a experiment that both firmly established the cell theory beyond doubt and solidified the basic steps of the modern scientific method.
