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

How are intracellular receptors different from membrane receptors?

Intracellular receptors are embedded in the plasma membrane, while membrane receptors are found in the cytoplasm.

Intracellular receptors require ATP to function, while membrane receptors do not.

Intracellular receptors only recognize carbohydrates, while membrane receptors only recognize proteins.

Intracellular receptors bind to ligands inside the cell, while membrane receptors bind to ligands on the cell surface.

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Verified step by step guidance

Step 1: Understand the two types of receptors mentioned in the problem: intracellular receptors and membrane receptors. Intracellular receptors are located inside the cell, typically in the cytoplasm or nucleus, while membrane receptors are embedded in the plasma membrane.

Step 2: Recognize the key difference in ligand binding. Intracellular receptors bind to ligands that can cross the plasma membrane, such as small, hydrophobic molecules (e.g., steroid hormones). Membrane receptors, on the other hand, bind to ligands that cannot cross the membrane, such as large or hydrophilic molecules (e.g., proteins or peptides).

Step 3: Analyze the incorrect statements provided in the problem. For example, intracellular receptors are not embedded in the plasma membrane, and they do not exclusively recognize carbohydrates. Similarly, membrane receptors are not found in the cytoplasm, and they do not exclusively recognize proteins.

Step 4: Focus on the correct statement: Intracellular receptors bind to ligands inside the cell, while membrane receptors bind to ligands on the cell surface. This distinction is based on the location of the receptor and the type of ligand it interacts with.

Step 5: Summarize the key concept: Intracellular receptors are located within the cell and interact with ligands that can diffuse through the plasma membrane, while membrane receptors are located on the cell surface and interact with ligands that cannot cross the membrane.