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Transmission Electron Microscope (TEM) Quiz

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Transmission Electron Microscope (TEM) Quiz

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Questions and Answers

What is used to enhance the image in a transmission electron microscope (TEM)?

Thin section of preserved cells coated with a special polymer

Thin section of preserved cells stained with atoms of heavy metals (correct)

Thin section of preserved cells exposed to ultraviolet light

Thin section of preserved cells treated with organic dyes

What is the main function of a transmission electron microscope (TEM)?

To study the movement of organelles within cells

To study the internal ultrastructure of cells (correct)

To examine the behavior of live cells

To study the external features of cells

How is the image in a transmission electron microscope (TEM) focused and magnified?

By adjusting the electron beam intensity

By electromagnets instead of glass lenses (correct)

By using a series of mirrors

By refracting light through specialized filters

Study Notes

Transmission Electron Microscope (TEM)

Staining is used to enhance the image in a TEM, as it increases the contrast between different parts of the specimen.
The main function of a TEM is to produce a highly magnified image of the internal structure of a specimen, allowing for the study of ultrastructural features.
The image in a TEM is focused and magnified using electromagnetic lenses, which work by converging or diverging the electron beam to produce a magnified image on a screen or detector.

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Description

Test your knowledge about the transmission electron microscope (TEM) and its use in studying the internal ultrastructure of cells. Learn about how electron beams are used to generate 2-dimensional micrographs and the staining techniques used to enhance images of thin specimens.