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

Previous problemNext problem

Struggling with Cell Biology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following is an example of an ion-channel receptor?

Nicotinic acetylcholine receptor

Insulin receptor

G protein-coupled receptor

Epidermal growth factor receptor

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the concept of ion-channel receptors. Ion-channel receptors are a type of membrane protein that allows ions to pass through the membrane in response to a ligand binding. These receptors are also known as ligand-gated ion channels.

Step 2: Review the function of the nicotinic acetylcholine receptor. This receptor is a well-known example of an ion-channel receptor. When acetylcholine binds to it, the receptor opens a channel that allows ions such as Na⁺ and K⁺ to flow across the membrane.

Step 3: Examine the insulin receptor. The insulin receptor is a receptor tyrosine kinase, not an ion-channel receptor. It functions by activating intracellular signaling pathways upon insulin binding.

Step 4: Analyze the G protein-coupled receptor (GPCR). GPCRs are a different class of receptors that activate intracellular signaling cascades through G proteins, but they do not form ion channels.

Step 5: Consider the epidermal growth factor receptor (EGFR). EGFR is another receptor tyrosine kinase, which is involved in cell signaling and does not function as an ion-channel receptor. Based on this analysis, the nicotinic acetylcholine receptor is the correct example of an ion-channel receptor.