1. The Cell Theory

2. ANAXIMANDER Greek Sixth century B.C. Primary thoughts of evolution
Creatures from the sea were forced to come ashore, thereby evolving into land creatures

3. PLATO Did not directly aid in the progress of biological thinking
His view was philosophical.
Students went on to influence the progression of biological studies in the field of classification

4. THE ATOMISTS Democritus (460 - 370 B.C.)
He followed Anaximander's view of evolution
Credited as being the father of atomic theory which connects directly to biology.

5. ARISTOTLE (384 - 322 B.C.) Known for dissections.
( B.C.)
Known for dissections.
Drawn to animal classification in order to discover aspects of connection between the soul and the human body.
Some aspects still stand today.

6. THE DARK AGES Downfall in scientific thought. WHY??

7. LEONARDO DA VINCI, RENE DESCARTES, AND WILLIAM HARVEY
Three scientists from various periods.
Responsible for advancement of anatomical thought following the Dark Ages
Discoved the circulation of blood.

8. THE MICROSCOPE
Allowed scientists to gaze into a new world the cellular world.
Galileo is credited with the invention of the microscope.
First saw a living cell Antonie von Leeuwenhoek.

9. ROBERT HOOKE This English naturalist (1635 - 1703)
Coined the term "cell" after viewing slices of cork through a microscope.
The term came from the Latin word cella which means "storeroom" or "small container".

10. Rene Dutrochet
"the cell is the fundamental element in the structure of living bodies,”

11. Robert Brown
Made the first cell sighting

12. Declared that animals are composed of cells.
Matthias Schlieden's
Declared that animals are composed of cells.

13. Theodore Schwann
Schwann created the term "cell theory" and declared that plants consisted of cells.

14. Rudolph Virchow
Experimented with diseases and found that all cells come from other existing cells.

15. Cells Basic Units of life Building blocks of all organisms

16. The Cell Theory
1. All living things are composed of one or more cells. 2. Cells are organisms' basic units of structure and function. 3. Cells come only from existing cells.