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Cell Theory
Cell Theory
- All living things are made up of cells.
Every plant, animal, and microorganism is made of one or more cells.
The cell is the smallest living part of an organism
- Cells are the basic unit of life.
Cells are the smallest part of a living thing that can carry out all the functions needed to stay alive.
Living organisms are made up of cells
- All cells come from other cells.
New cells are made when existing cells divide and create copies of themselves.
Cells come from cells
These three ideas are the foundation of biology and help us understand how living things work!
History of Cell Theory
History of Cell Theory
Robert Hooke - 1665
Robert Hooke - 1665
Robert Hooke embraced and improved the first microscopes by designing his own light microscope.
Hooke observed cork cells and coined the term cell for describing biological organisms. The term was suggested by the resemblance of plant cells to monks' cells.
Robert Hooke was an excellent illustrator and he published his findings in a book called Micrographia. His work led to cell theory.
Cell structure of cork by Hooke
Robert Hooke saw cells first. He called them cells.
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