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

14. Cell Signaling

Overview of Cell Surface Receptors

Cell Biology

14. Cell Signaling

Overview of Cell Surface Receptors

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Multiple Choice

Which of the following best explains the advantage that cell surface receptor projections provide to the cell?

They provide structural support to the cell membrane, preventing it from collapsing.

They enable the cell to store more genetic material.

They increase the surface area available for ligand binding, enhancing the cell's ability to detect external signals.

They allow the cell to move more rapidly through its environment.

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Verified step by step guidance

Understand the role of cell surface receptors: Cell surface receptors are proteins embedded in the plasma membrane that detect and respond to external signals, such as hormones, neurotransmitters, or other signaling molecules (ligands).

Recognize the importance of surface area: The projections on the cell surface, such as microvilli or other receptor-rich structures, increase the surface area of the cell membrane. This allows for more receptors to be present on the membrane.

Relate surface area to ligand binding: With an increased surface area, the cell can accommodate more receptors, which enhances its ability to bind to ligands and detect external signals more effectively.

Eliminate incorrect options: Structural support to the membrane, storing genetic material, or aiding in cell movement are not functions of receptor projections. These options do not align with the primary role of cell surface receptors.

Conclude the correct explanation: The advantage of cell surface receptor projections is that they increase the surface area available for ligand binding, thereby enhancing the cell's ability to detect and respond to external signals.