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The Cell Theory

The Cell Theory. Hairy T-cell. Definition. = Three part theory about cells 1. All living things are made of cells. Part 2 of the Theory. 2. The cell is the basic structural and functional unit of life. Part 3 of the Theory. 3. All cells come from pre-existing cells. yeast cells dividing.

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The Cell Theory

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  1. The Cell Theory Hairy T-cell

  2. Definition = Three part theory about cells 1.All living things are made of cells.

  3. Part 2 of the Theory 2. The cell is the basic structural and functional unit of life.

  4. Part 3 of the Theory 3. All cells come from pre-existing cells. yeast cells dividing

  5. Robert Hooke • Born: July 18, 1635 • Died: March 3, 1703 • Wrote and published “Micrographia” • Known as the “English Father of Microscopy” http://www-groups.dcs.st-and.ac.uk/~history/PictDisplay/Hooke.html

  6. 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

  7. Anton van Leeuwenhoek • Born: October 24, 1632 • Died: August 30, 1723 • He is known as the “Father of Microscopy.” http://en.wikipedia.org/wiki/Anton_van_Leeuwenhoek

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

  9. Matthias Schleiden • Born: April 5, 1804 • Died: June 23, 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

  10. Theodor Schwann • Born: December 7, 1810 • Died: January 11, 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/

  11. Rudolph Virchow • Born: October 13, 1821 • Died: September 5, 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

  12. Who came up with this theory? All plants are made of cells! 1. Schleiden (circa 1838) Onion skin cells

  13. Who came up with this theory? All animals are made of cells! 2. Schwann Human red blood cells

  14. Who came up with this theory? 3. Virchow All cells come from pre-existing cells!

  15. Definition = Three part theory about cells 1.All living things are made of cells.

  16. Part 2 of the Theory 2. The cell is the basic structural and functional unit of life.

  17. Part 3 of the Theory 3. All cells come from pre-existing cells. yeast cells dividing

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