Paper 1 required practicals

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Microscopes

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5 Terms

1
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Light vs Electron microscope

Limited details, easier to access, can look at live specimens

Greater details, large and expensive, only examine dead cells

2
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Objective lens

Usually 4x, 10x and 40x

Eyepiece has a magnification of 10x

3
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How to magnify

Start with lowest magnification.

Course focusing dial- makes objective lens closer

Fine focusing dial- makes image clearer

4
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Magnification bar

draw diameter and add a scale

5
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Labelling drawings

Include magnification scale, pencil, make sure lines join up, no sketching