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Samples prepared for transmission electron microscopy are embedded in an epoxy resin and sliced into ultrathin (100 nm) sections. The sections are usually stained with a heavy metal such as lead to enhance contrast. The sections are then examined with a transmission electron microscope. The photographs of these thin sections are put in order according to their position in the living cell and used to determine the shape of the original sample.
Determine the appearance of the original, intact cell.

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Answer:

The correct answer is - Erythrocytes or Red Blood Cells.

Explanation:

Transmission electron microscopy or TEM is embedded in an epoxy resin and sliced into sections that are very thin almost 100 nm. Stain for such sections is usually a heavy metal such as lead to enhance contrast.

The Images of these thin sections are arranged together in order of location in the living cell and used to determine the shape of the original sample.

The cells are Erythrocytes or Red Blood Cells. The shape of the cell is a biconcave shape. The surfaces of the cell from both side are curve inward as like as the interior of a sphere.

Thus, the correct answer is - Erythrocytes or Red Blood Cells.

In the given case, TEM is used to examine red blood cells or erythrocytes, which are biconcave in shape.

The principle of TEM:

TEM or transmission electron microscopy is embedded in an epoxy resin and is sliced into parts, which are very thin, that is, approximately of the size of 100 nm. The stain used for TEM is generally a heavy metal like lead that enhances its contrast.

The images of this thin sectons are aligned in combination in order of its position in the living cell and is used to find the shape of the original sample. In the given case, the cells are red blood cells or erythrocytes. The shape of the cell is biconcave, the surfaces of the cell from both the ends are inwardly curved similar to the interior of a sphere.

Thus, in the given case, TEM is used to determine the shape of red blood cells or eyrthrocytes.

Find more information about the principles of TEM here:

https://brainly.com/question/13022785

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