1. Cell Structure & Function
Discovering Cells
Chapter 1
Section 1

2. Cells
The basic units of structure and function in living things

3. First Sightings of Cells
The invention of the microscope made it possible for people to discover and learn about cells

4. Compound Microscope A light microscope with more than 1 lens
Can magnify up to 10,000x
Good for…
Cells
Small Organisms

5. Robert Hooke 1663, English Scientist
1 of the 1st people to observe cells
Cork cells  “Rectangular rooms”

6. Anton van Leeuwenhoek 1683, Dutch Businessman Observed… Pond water
“Animalcules”  little animals
Teeth scum
bacteria

7. Cell Theory 3 Key Points… All living things are composed of cells
Cells are the basic unit of structure and function in living things
All cells are produced from other cells

8. Magnification
The lens or lenses in a light microscope magnify an object by bending the light that passes through them
Convex lenses

9. Resolution
The sharpness of an image

10. Electron Microscopes Use a beam of electrons to examine a specimen
Can magnify up to 1,000,000x
Good for…
Viruses
Bacteria
Cell organelle