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

The arrows point to filaments that make up the:

mitochondria

cytoskeleton

endoplasmic reticulum

Golgi apparatus

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Verified step by step guidance

Understand the question: The problem is asking about the filaments shown in the image (not provided here) and which cellular structure they belong to. The options provided are mitochondria, cytoskeleton, endoplasmic reticulum, and Golgi apparatus.

Recall the function and structure of each option: Mitochondria are double-membraned organelles responsible for energy production and do not contain filamentous structures. The cytoskeleton is a network of protein filaments that provides structural support and facilitates intracellular transport. The endoplasmic reticulum is a membranous organelle involved in protein and lipid synthesis, and the Golgi apparatus is responsible for modifying, sorting, and packaging proteins.

Focus on the cytoskeleton: The cytoskeleton is composed of three main types of filaments—microfilaments (actin filaments), intermediate filaments, and microtubules. These filaments are visible under a microscope and are often indicated by arrows in cell images.

Eliminate incorrect options: Mitochondria, endoplasmic reticulum, and Golgi apparatus do not consist of filamentous structures. Therefore, these options can be ruled out.

Conclude that the filaments in the image are part of the cytoskeleton, as it is the only structure among the options that is made up of filaments.