1. Life is cellular 7.1

2. Key Questions What is the cell theory? How do microscopes work?
How are prokaryotic and eukaryotic cells different?

3. The Cell Theory All living organisms are made up of one or more cells.
Cells are the basic unit of structure and function in all living organisms.
Cells arise only from previously existing cells.

4. Microscope is the main tool
Light microscope used in classroom. Can view living subjects, but magnification only goes to 1000X (400X).
Electron microscope uses electrons to create image. Can magnify to 500,000X

5. Compound light microscope

6. Electron microscope images

7. What cells have in common
All cells have a plasma membrane, ribosomes, and genetic material.
Cells break down molecules for energy (metabolism).

8. Differences in cells
Cells differ in their function (what they can do).
Cells are grouped along 2 distinguishing differences – prokaryotic and eukaryotic.

9. Prokaryotic vs eukaryotic cells
Prokaryotic – cells without a nucleus or membrane bound organelles. Example is bacteria, archea
Eukaryotic – cells that contain a nucelus and other membrane bound organelles. Examples are plants, animals, protists, and fungi.

10. What came first? Why are there 2 cell types and which one came first?
Endosymbiont theory
What 2 organelles are associated with this theory?