Table of contents

1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

22. Techniques in Cell Biology

Electron Microscopy

Cell Biology

22. Techniques in Cell Biology

Electron Microscopy

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Multiple Choice

Which of the following types of microscopy works by shooting electrons through the specimen?

Light microscopy

Transmission electron microscopy

Scanning electron microscopy

FRAP floruences microscopy

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Verified step by step guidance

Understand the different types of microscopy: Light microscopy uses visible light to illuminate specimens, while electron microscopy uses electrons.

Identify the two main types of electron microscopy: Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM).

Learn the principle of Transmission Electron Microscopy (TEM): It works by transmitting a beam of electrons through a very thin specimen, allowing for the observation of internal structures.

Contrast this with Scanning Electron Microscopy (SEM): SEM scans the surface of a specimen with a focused beam of electrons, providing detailed surface images.

Recognize that FRAP (Fluorescence Recovery After Photobleaching) is a technique used in fluorescence microscopy, not electron microscopy, and involves observing the movement of fluorescent molecules within cells.