1. 1-4 Tools and Procedures Key Concepts: Vocabulary:
What measurement system do most scientists use?
How are light microscopes and electron microscopes similar? How are they different?
Vocabulary:
Metric system
Microscope
Compound light microscope
Electron microscope
Cell culture

2. Microscopes
Two main types:
Light Microscopes
Electron Microscopes

3. EYEPIECE
COARSE ADJUSTMENT
FINE ADJUSTMENT
ARM
LOW-POWER OBJECTIVE
ARM
HIGH-POWER OBJECTIVE
STAGE
STAGECLIPS
FINE ADJUSTMENT
STAGECLIPS
BASE
IRIS
MIRROR
COARSE ADJUSTMENT
LAMP
DIAPHRAGM

4. MICROSCOPE NOTES COMPOUND LIGHT MICROSCOPE: most common scope
Advantages: get higher magnification than with a dissecting scope.
Drawbacks: the light comes from below so sample must be very thin so you can see
Usually view dead things with this microscope.
Limit of resolution: if you magnify beyond this point, the object will be blurry.

5. DISECTING MICROSCOPE: used to view dissection or small live (sleeping) animals such as fruit flies.
Advantages: can view samples that are alive; large field of view
Drawbacks: magnification is not as high as other microscopes.

6. SCANNING ELECTRON MICROSCOPE (SEM): used to see very small “stuff”
Advantages: can study very small objects such as viruses and individual molecules; can magnify things 1000x that of a light microscope.
Drawbacks: object must be dead; also very expensive!

7. Face of an ant!
IMAGES
PINHEAD