cell theory
principles of cell theory
- cells are the smallest living component
- all living things are made of cells
- cells must come from preexisting cells
- asexual reproduction, duplication
scientists and their contributions
- robert hooke - 1665
- english inventor and scientist
- built first microscope
- found cells while looking at corks
- reminded him of windows in monasteries
- coined the term cells
- anton van leeuenhoek - 1673
- handmade microscope with 300x zoom
- found single-celled organisms looking at pond scum
- animalcules
- found cells in fish, bird, frog, dog, and human blood
- matthias schleiden - 1838
- german botanist
- concluded all plant parts are made of cells
- theodor schwann - 1839
- german physician
- concluded all animal tissues are made of cells
- rudolf virchow - 1858
- german physician
- studied cellular pathology
- found that all cells come from preexisting cells