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 feature of cells is best demonstrated by the presence of cell surface receptors?

Storage of genetic information in the nucleus

Formation of rigid cell walls for structural support

Capacity for energy production through mitochondria

Ability to receive and respond to external signals

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Verified step by step guidance

Understand the role of cell surface receptors: Cell surface receptors are specialized proteins embedded in the plasma membrane that allow cells to detect and respond to external signals, such as hormones, neurotransmitters, or environmental cues.

Eliminate unrelated options: The storage of genetic information in the nucleus is unrelated to cell surface receptors, as this function is carried out by DNA within the nucleus.

Consider the structural role: The formation of rigid cell walls for structural support is a feature of plant cells and some prokaryotes, but it is not related to the function of cell surface receptors.

Evaluate energy production: The capacity for energy production through mitochondria involves cellular respiration, which is unrelated to the function of cell surface receptors.

Conclude the correct feature: The ability to receive and respond to external signals is the best feature demonstrated by the presence of cell surface receptors, as these receptors mediate communication between the cell and its environment.