1. Early Scientist’s Contributions
The Cell Theory
Early Scientist’s Contributions

2. Cell Theory
The Cell Theory is a widely accepted explanation of the relationship between cells and living things.

3. * First compound light microscope*
Anton van Leeuwenhoek
* First compound light microscope*

4. Robert Hooke
*Came up with the term “cell” by observing cork cells from the bark of a cork tree.*

5. *All plants are made of cells.*
Matthias Schlieden
*All plants are made of cells.*

6. *All animals are made of cells.*
Theodor Schwann
*All animals are made of cells.*

7. *Cells can only come from other cells.*
Rudolf Virchow
*Cells can only come from other cells.*

8. Cell Theory All organisms are made of cells.
The cell is the basic living unit of all
organisms.
All cells come only from other cells.

9. Questions...  Who used the first microscope?
 Who said that plants were made of cells.
 Who came up with the term “cell”?
 Who said that all animals were made of
cells?
 Who said that cells must come only from
other cells?