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

Actin Based Movement

Cell Biology

15. Cytoskeleton and Cell Movement

Actin Based Movement

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Multiple Choice

Which of the following proteins are used so that the cell can attach to the surface on which it is crawling?

ECM proteins

Filaments

Filopedia

Integrins

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Verified step by step guidance

Understand the context: Cells often need to attach to surfaces for movement, signaling, or structural purposes. This attachment is crucial for processes like cell migration.

Identify the role of integrins: Integrins are transmembrane receptors that facilitate cell-ECM (extracellular matrix) adhesion. They are essential for cells to attach to the surfaces they are crawling on.

Differentiate between the options: ECM proteins are components of the extracellular matrix, filaments are part of the cytoskeleton, and filopodia are cellular protrusions. None of these directly mediate attachment to surfaces like integrins do.

Recognize the function of integrins: Integrins bind to ECM proteins outside the cell and connect to the cytoskeleton inside the cell, providing a link that allows the cell to adhere to surfaces.

Conclude with the correct choice: Based on their function in cell adhesion, integrins are the proteins used by cells to attach to the surfaces on which they are crawling.