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

Overview of the Cytoskeleton

Cell Biology

15. Cytoskeleton and Cell Movement

Overview of the Cytoskeleton

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Multiple Choice

Which of the following is not a component of the cytoskeleton?

Intermediate filaments

Actin filaments

Nucleation

Microtubules

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Verified step by step guidance

Understand the components of the cytoskeleton: The cytoskeleton is a network of fibers that provides structural support to the cell. It is composed of three main types of protein filaments: microtubules, actin filaments (also known as microfilaments), and intermediate filaments.

Identify the role of each component: Microtubules are involved in maintaining cell shape, enabling cell motility, and facilitating intracellular transport. Actin filaments are crucial for cell movement and muscle contraction. Intermediate filaments provide mechanical support for the cell.

Define 'nucleation': In cell biology, nucleation is the initial process that occurs in the formation of a new structure, such as the assembly of microtubules or actin filaments. It is not a structural component but rather a process.

Compare the options: Review the list of options provided: Intermediate filaments, Actin filaments, Microtubules, and Nucleation. Determine which one does not fit the definition of a cytoskeletal component.

Conclude which is not a component: Based on the understanding that nucleation is a process and not a structural component, identify 'Nucleation' as the option that is not a component of the cytoskeleton.