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The Cell Theory Scientists and The Cell Theory Robert Hooke – Anton van Leeuwenhoek – Robert Brown – Theodore Schwann – Matthias Schleiden – Rudolf Virchow – Cell Theory 1. 2. 3. Cell Theory and the Nature of Science Research – Technology – Biology Unit III - Cells Learning Goal One Describe the cell theory and how it relates to the nature of science. Scientists and the Cell Theory • Robert Hooke (1665) Used an early microscope to view a thin slice of cork. Coined the term cells because the chambers reminded him of cells in a monastery. • Anton van Leeuwenhoek Observed living cells around the same time in pond water. Was amazed to see things moving around. Called them “wee beasties”. • Robert Brown (1828) Observed that cells had nuclei. • Theodore Schwann(1839) German biologist. Stated that all animals are made of cells. • Matthias Schleiden (1838) German botanist Concluded that all plants are made of cells. • Rudolf Virchow (1855) Observed cells dividing. Concluded that cells could only come from other cells. Cell Theory 1. All living things are made of cells. 2. Cells are the basic unit of structure and function in living things. 3. Cells come from pre-existing cells. Cell Theory and the Nature of Science • Research • Many scientists over many years collecting evidence. • Technology • As technology improves theories may be strengthened or modified in light of new evidence. Microscopes