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Chapter 4: Q. 27 (page 126)

In what situation(s) would a transmission electron microscope be ideal, and why?

Short Answer

Expert verified

Transmission electron microscopy uses a beam of electrons that pass through thin sections of the specimen to produce high-resolution images of the internal structures of cells.

Step by step solution

01

Introduction

Transmission electron microscopy (TEM) uses a fine beam of electrons directed on a thin slice of a specimen by electromagnetic lenses. The electrons passing through the specimen are collected on a detector to produce an image.

02

Explanation

Transmission electron microscopy (TEM) can produce images with a resolution of 0.2nm. The area of the specimen that has less density will allow more electrons to pass through generating a brighter image. A darker image is obtained in areas of high density. This contrast provides information on the structure, shape, texture, and size of the specimen.

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Most popular questions from this chapter

Which of the following is both in eukaryotic and

prokaryotic cells?

a. nucleus

b. mitochondrion

c. vacuole

d. ribosomes

Explain how the formation of an adult human follows the cell theory.

Which of the following is not a component of the

endomembrane system?

a. mitochondrion

b. Golgi apparatus

c. endoplasmic reticulum

d. lysosome

The key components of desmosomes are cadherins and__________.

a. actin

b. microfilaments

c. intermediate filaments

d. microtubules

Tay-Sachs disease is a genetic disorder that results in the destruction of neurons due to a buildup of sphingolipids in the cells. Which organelle is malfunctioning in Tay Sachs?

a. lysosome

b. endoplasmic reticulum

c. peroxisome

d. mitochondria
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