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B1 Cell Biology - Microscopy
AQA GCSE Paper 1
9
Biology
9th Grade
10/11/2021

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Cards

Term
What are the two types of microscopes?
Definition
Light microscopes and electron microscopes.
Term
What are the advantages of a light microscope?
Definition
-they are cheaper
-they can see colours
-they can see a live specimen
Term
What are the disadvantages of a light microscope?
Definition
-they have lower magnification
Term
What are the advantages of an electron microscope?
Definition
-they are expensive
-they have a very high magnification
Term
What are the disadvantages of an electron microscope?
Definition
-they can only see dead specimen
-they show no colour
Term
How do you calculate magnification?
Definition
magnification = size of image / actual size of object
Term
How do you calculate the actual size of an object?
Definition
actual size of object = size of image / magnification
Term
What is the total magnification of a light microscope with an eyepiece lens of ×10 and an objective lens of ×40?
Definition
x400
Term
If a drawing of a cell in a textbook is 1 cm and the scale shows it to be 0.1 mm in real life, what is its magnification?
Definition
x100
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