Cell structure and transport

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1.1 The world of the microscope

Most cells you can only see using a microscope, so you need to know the units used for such tiny specimens. 

1 kilometer (km) = 1000 meters (m)

1 meter (m) = 100 centimeters (cm)

1 centimeter (cm) = 10 milimiters (mm)

1 militmeter (mm) = 1000 micrometers (µm)

1 micrometer(µm) = 1000 nanometers (nm)

THE MAIN TYPES OF MICROSCOPES...

> Light Microscopes

They use a beam of light to form an image of an object and the best can magnifiy to around 2000 times.

> Transmission electron microscopes

This gives a 2D images with very high magnification

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