Cell Theory and the Scientists Who Helped Shape It

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Presentation transcript:

Cell Theory and the Scientists Who Helped Shape It

The Cell The smallest unit that can perform all life processes

Scientists and the Cell Theory

Anton van Leeuwenhoek (1632-1723) Used a simple microscope to look at pond scum. Saw “wee beesties” and “animalcules” He is known as the “Father of Microscopy.” http://en.wikipedia.org/wiki/Anton_van_Leeuwenhoek

Anton van Leeuwenhoek Discoveries: - 1673: He looked at pond scum under the microscope and discovered small organisms he called animalcules or little animals (Protists) - 1676: discovered bacteria Remember teeth gunk? http://www.kent.k12.wa.us/staff/TimLynch/sci_class/chap09/lesson_protista/Protista_Lesson.html#Algae

Robert Hooke (1635-1703) Used a compound microscope (2 lenses) Looked at cork under microscope Named what he saw, “cells” http://www-groups.dcs.st-and.ac.uk/~history/PictDisplay/Hooke.html

Robert Hooke Contributions: - He observed pieces of cork from the bark of a cork tree under the microscope. - His observations led him to coin the word “cell.” - “Cell”- means little rooms in Latin - He compared the small boxes to the small rooms that monks lived in. http://www.learner.org/channel/courses/essential/life/session1/closer1.html

Matthias Schleiden (1804-1881) German botanist Discovered that all plants were made of cells Contributed to the creation of the cell theory http://www.britannica.com/eb/article-9066147/Mathias-Jacob-Schleiden

Theodor Schwann (1810-1882) German zoologist Concluded that all animals are made of cells. Contributed to the creation of the cell theory http://www.nndb.com/people/357/000096069/

Rudolph Virchow (1821-1902) German pathologist He is known as the “Father of Pathology.” Discovered that all living cells come only from other living cells. http://en.wikipedia.org/wiki/Image:Rudolf_Virchow.jpg

The Cell Theory Major Contributors: Matthias Schleiden Theodor Schwann Rudolph Virchow

The Cell Theory All living things are made of cells. Cells are the basic units of structure and function in living things. Living cells come only from other living cells.

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