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1) Metal shadowing in TEM studies is essential for examining which one of the fo

ID: 264604 • Letter: 1

Question

1) Metal shadowing in TEM studies is essential for examining which one of the following types of specimen samples?

Tissue samples

A suspension of cells (like bacteria)

Vitrified specimens

Particulate samples

Freeze-etched material

2) The most important component of a transmission electron microscope or a light microscope is which one of the following?

The condenser lenses or lens

The recording device (film or CCD or DED camera)

The specimen stage

The electron gun or filament

The objective lens

The vacuum system

The projector lenses or lens

3) Chemical fixation in the preparation of biological specimens for TEM is primarily used to examine which one of the following types of samples?

Crystalline samples

Particulate samples

Freeze-etched material

Metal-shadowed material

Tissue samples

Vitrified specimens

a.

Tissue samples

b.

A suspension of cells (like bacteria)

c.

Vitrified specimens

d.

Particulate samples

e.

Freeze-etched material

Explanation / Answer

1) Metal shadowing in TEM studies is essential for examining which one of the fo