Why are there so many diff types of microscopes and ways of preparing samples? W

Question

Why are there so many diff types of microscopes and ways of preparing samples? What would be the disadvantages/advantages to a particular technique and under what circumstances would you use each of these techniques?

For example:
match the correct "tool" w/the purpose of the observation:

a. stereoscope (dissecting light microscope)
b. compound (light microscope)
c. scanning electron microscope
d. transmission electron microscope

___ Skin cells scraped from the inside of your cheek
___ counting the hairs on the surface of a leaf
___ determining the types of bacteria composing a colony
___ describing the outer surface of a virus
___ observing the heart beats of a frog as a stimulant is added

Explanation / Answer

Answer: 1) B 2) A 3) D 4) C 5) A A is used for minor magnification. B is used for somewhat stronger magnification. Both C and D are used for strong magnification, but C is used to look at surfaces of specimens whereas D is used to see through the specimen to look at the insides.

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