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Microscopes




Light microscope­ Light microscopes shine light through a specimen and then uses focused lenses
to magnify it.

Laser scanning microscope ­ These use laser light to scan an object, point by point, before using
the information to assemble an image on the computer. They create very high definition, high…

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Electron microscope Light microscope



3. Plant vascular bundle




Electron microscope Light microscope

4. E.Coli bacteria




Electron microscope Light microscope

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5. Mitochondria




Electron microscope Light microscope Laser scanning microscope

Magnification

The magnification is how many times bigger an image is compared to the original specimen.
Microscopes produce linear magnification. (it's width and length are magnified by the same
amount)

Magnification = Size of Image/Size of Object

Size of Object =…

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Optical Microscopes Electron Microscopes
Relatively cheap Expensive
Easy to use Large
Portable for fieldwork Need a great deal of skill and training to use
Able to be used to study whole living Specimens have to be dead
specimens
Eukaryotic Cells
1) Robert Hooke 1665 discovered cells
2) Cilia/flagellum ­ long…

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Eukaryotic Plant Cells




Chloroplasts

These are 4 ­ 10um long
organelles with a double
membrane like mitochondria.
They are the site of
photosynthesis. Stage 1: light
energy is trapped to make ATP &
water is split for hydrogen ions
(occurs in grana). Stage 2:
hydrogen reduces CO2 & uses
the…

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