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

15. Cytoskeleton and Cell Movement

Intermediate Filaments

Cell Biology

15. Cytoskeleton and Cell Movement

Intermediate Filaments

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Multiple Choice

Two intermediate filament dimers are arranged in which of the following ways to create a tetramer?

Parallel

Anti-parallel

End-to-End

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Verified step by step guidance

Understand the structure of intermediate filaments: Intermediate filaments are composed of protein subunits that form dimers, which are two protein molecules joined together.

Recognize the arrangement of dimers: In the context of intermediate filaments, dimers can align in different orientations to form higher-order structures.

Identify the tetramer formation: A tetramer is formed when two dimers come together. The key to forming a tetramer is the orientation of these dimers.

Differentiate between parallel and anti-parallel arrangements: In a parallel arrangement, the dimers align in the same direction. In an anti-parallel arrangement, the dimers align in opposite directions.

Apply the concept to the problem: For intermediate filaments, the correct arrangement to form a tetramer is anti-parallel, meaning the dimers are aligned in opposite directions, allowing for a stable and functional structure.