The cell is the lowest level of structure capable of performing all activities of life.
Discovery of the cell
Robert Hooke (1665)
- English scientist, first described and named cells.
- Observed in a slice a cork and saw that the compartments / tiny boxes or cells were unique to cork.
Anton van Leeuwenhoek (1674)
- Dutchman who first saw live cells using grains of sand polished into magnifying glasses.
- Saw a microbial world in droplets of pond water and also observed blood cells and sperm cells of animals.
Matthias Schleiden and Theodor Schwann (1839)
- German biologists, reached a generalization based on many concurring observations reaching a generalization that all living things consists of cells.
Rudolph Virchow (1858)
- German doctor, concluded that all cells come from pre-existing cells based on his study on how cells reproduce.
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Cell Theory
1. All living things are composed of cells.
2. A cell is the smallest unit with the properties of life.
3. Each new cell arises from division of another, preexisting cell.
4. Each cell passes hereditary material to its offspring.
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