A major breakthrough in the study of cel...

A major breakthrough in the study of cells came with the development of electron microscope. This is because

The resolution power of the EM is much higher than that of light microscope

The resolving power of the EM is 200-350 nm as compared to 0.1-0.2 nm for the light microscope

Electron beam can pass through thick materials, whereas light microscopy requires thin sections

The EM is more powerful than the light microscope as it uses a beam of electrons which has wavelength much longer than that of protons.

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Electron microscope is used for

Viewing structure of the cell

Whole mount study

Cell division study

Structure of the pollen grain

counting microbes in a sample

whole mount study

separating constituents of mixture

viewing ultrastructure of the cell

Objective and ocular lenses

Polarizer and analyzer filters

Electromagnetic lenses

Fluorochromes