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 component of the cytoskeleton is primarily responsible for moving chromosomes during cell division?

Microtubules

Actin filaments

Myosin fibers

Intermediate filaments

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Verified step by step guidance

Understand the role of the cytoskeleton in cell division: The cytoskeleton is a network of protein filaments that provides structural support and facilitates intracellular transport and cell division.

Identify the specific task in question: Moving chromosomes during cell division involves separating sister chromatids and ensuring they are distributed to daughter cells.

Recall the components of the cytoskeleton: The cytoskeleton consists of three main types of filaments—microtubules, actin filaments, and intermediate filaments. Each has distinct functions.

Focus on microtubules: Microtubules are dynamic filaments composed of tubulin proteins. They form the mitotic spindle, which attaches to chromosomes at the kinetochore and facilitates their movement during anaphase of mitosis.

Eliminate other options: Actin filaments are involved in cell shape and motility, myosin fibers are motor proteins that interact with actin, and intermediate filaments provide structural support but do not move chromosomes. Therefore, microtubules are the correct answer.