The document summarizes the history and key discoveries related to cells, including: 1) Robert Hooke was the first to observe cells in 1665 when examining a cork sample under his homemade microscope and described the structures as "little boxes". 2) Anton van Leeuwenhoek later observed microorganisms in pond water in 1673 which he called "animalcules", including some of the first observations of bacteria. 3) In the 1830s-1850s, Matthias Schleiden, Theodore Schwann, and Rudolf Virchow developed the three main principles of the cell theory - that all organisms are made of cells, the cell is the basic unit of living things, and all cells

1. Mindstretcher: use 2 boxes if needed DNA is held in the ____________ of the cell. Nucleus 2. How many cells Make Up the Human Body? 100 Trillion 3. ____________ and ___________ are the two types of Prokaryotic cells? Achaea and Bacteria 4. What is the difference between Prokaryotic nad Eukaryotic Cells? Eukaryotic cells have a Nucleus, Prokaryotic Cells Do Not. 5. On which objective lenses do we use the Fine Focus Knob. All of them: 4x, 10x, 40x

2. Notes Page Set the Page Up Cornell Note Style (No Summary Section) Headings GO on LEFT Facts Go on Right Headings Go Here!! History of Cells Facts Go Here!

3. History of Cells

4. A Cork Sample...... Robert Hooke (1665) built a homemade microscope First specimen was cork Thought the sample looked like little boxes or little rooms Called them Cells ( means little rooms in Latin) What are some other things he viewed?

5. Cork Cell Drawn by Robert Hooke Robert Hooke was the FIRST person to describe cells!!!!

6. Animalicules Anton Von Leeuwenhoek (1673) Built his own microscopes Viewed pond scum Saw many different little organisms Called them animalicules (little animals) Today animalicules are known as protists Also viewed animal blood and saw the differences in the blood cells First to see Bacteria

7. Anton Von Leeuwenhoek

8. Theory of Cells Matthias Schleiden (1838) All Plant Parts are Made of Cells Theodore Schwann (1839) All Animal Tissues are Made of Cells Wrote First two parts of The Cell Theory All Organisms are made of cells Cell is the Basic Unit of all Living Things Rudolf Virchow (1858) 3. All Cells Come From Existing Cells

9. Three Parts of Cell Theory! All Organisms are Made of Cells The Cell is the Basic Unit of All Living Things All Cells Come from Existing Cells. (Rudolf Virchow)

10. What did hooke see? We are going to replicate Hooke’s Research by viewing cork cells! You will need to view the cork cells at all three magnifications! I will be walking around to check your microscope skills!

11. Your Paper Should Look Like This! Initial Observations: Drawings: Final Observations: Specimen Name: Cork Cells