1. Cell Theory Timeline

2. Get out Notebook Name The Cell Theory Date Period 1. 2. 3.
Cell Scientists 1. 2. 3. 4. 5. 6. 7. 8.

3. Cell Theory 1. All living things are made of cells.
2. Cells are the basic units of structure and function in living things. (structure = form; function = purpose)
3. Living cells only come from other living cells.

4. Taking Notes In order to complete your timeline…
Take notes of the following scientists
Zacharias and Hans Jansen
Aristotle
Robert Hooke
Anton van Leeuwenhoek
Matthias Schleiden
Theodor Schwann
William Henry Perkin
Rudolph Virchow
Write down their name, date, and a brief description of what they did.

5. Aristotle 334 B.C.E. Aristotle observed nature directly.
He classified all known organisms as either plants or animals.
B.C.E.= Before Common Era

6. It all started with… The first microscope! Zacharias and Hans Jansen
1595
Middleburg, Holland
Placed two lenses in a tube

7. Hans & Zacharias Janssen
1595
Hans & Zacharias Janssen produced the first compound microscope by lining up 2 lenses.

8. Robert Hooke
1665
Robert Hooke observed lining matter (cork cells) through a compound microscope, which reveals empty cells.
He is the first to call the spaces in the cork “cells” which means little rooms.

9. Anton van Leeuwenhoek
1675
Anton van Leeuwenhoek observed living cells through a simple microscope.

10. Matthias Schleiden
1838
Matthias Schleiden discovered that plants were made of cells.

11. Theodor Schwann
1839
Theodor Schwann states “all animals are made of cells.”

12. William Henry Perkin
1856
William Henry Perkin develops an intense purple dye, which is used to stain slides.

13. Rudolph Virchow 1858 Rudolph Virchow states…
“Cells are the last link in a great chain that forms tissues, organs, systems, and individuals. Where a cell exists, there must have been a preexisting cell.”
Cells can only arise from pre-existing cells

14. Create a Cell Timeline
Label the timeline with the dates, scientist names, and details of the important discoveries.
The earliest date should be on the left and the most recent on the right.
Show a reasonable amount of elapsed time between dates.
8 events & 8 pictures
Graded on neatness, accuracy, and use of color.
List Cell Theory and the 3 parts of the Cell Theory.