AS Biology- microscopes mini test

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  • Created by: Heiwa
  • Created on: 28-11-12 15:13
define resolution
the degree to which it is possible to distinguish two points as separate from each other.
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define magnification
the degree to which the size of an image is larger than the object itself.
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what is the maximum magnification of a light microscope?
x1500
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a light microscope has a resolving power of 200nm. what causes this to be so small?
as light has a large wavelength
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what are 2 advantages of using a light microscope compared to an electron microscope?
very cheap and easy to use
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what are the 2 stages specimens must go through to be ready for microscopy?
staining and sectioning
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what formula would you use to calculate image size?
Image size = actual size x magnification
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what are the 2 different types of electron microscopes?
scanning electron microscope (SEM) and transmission electron microscope (TEM)
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What is an advantage of using an electron microscope over a light microscope?
produces a 3D image that reveals a detailed image of cellular and tissue arrangements
9 of 10
what is the resolution of an electron microscope?
0.1nm
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Card 2

Front

define magnification

Back

the degree to which the size of an image is larger than the object itself.

Card 3

Front

what is the maximum magnification of a light microscope?

Back

Preview of the front of card 3

Card 4

Front

a light microscope has a resolving power of 200nm. what causes this to be so small?

Back

Preview of the front of card 4

Card 5

Front

what are 2 advantages of using a light microscope compared to an electron microscope?

Back

Preview of the front of card 5
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