Cell Structure (AQA GCSE Biology): Flashcards

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Microscopy
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Scientist who first observed cork cells

Robert Hooke

Year cork cells first observed

1665

Max magnification of light microscope

×2000

Resolving power of light microscope

200nm

Decade electron microscopes developed

1930s

What electron microscopes use instead of light

Electrons

Type of image created by SEM

3D images

Type of image created by TEM

2D images detailing organelles

Max magnification of electron microscope

Up to ×2,000,000

Resolving power of TEM

0.2nm

Resolving power of SEM

10nm

Formula for light microscope magnification

Eyepiece magnification × objective magnification

Formula for size of object

Size of object = Size of imageMagnification\frac{\text{Size of image}}{\text{Magnification}}

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