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

What does a mechanically gated channel respond to?

Physical deformation of the membrane

Binding of a specific ligand

Changes in membrane potential

Phosphorylation by kinases

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Verified step by step guidance

Understand the concept of ion channels: Ion channels are proteins that allow ions to pass through the cell membrane. They can be classified based on what triggers their opening or closing, such as mechanical forces, ligands, or voltage changes.

Define mechanically gated channels: These channels open or close in response to physical deformation of the cell membrane, such as stretching, compression, or other mechanical forces.

Analyze the options: Evaluate each option to determine if it aligns with the definition of a mechanically gated channel. For example, 'Binding of a specific ligand' refers to ligand-gated channels, and 'Changes in membrane potential' refers to voltage-gated channels.

Eliminate incorrect options: Remove options that do not involve physical deformation of the membrane, such as ligand binding, changes in voltage, or phosphorylation by kinases.

Select the correct answer: Based on the definition and elimination process, identify 'Physical deformation of the membrane' as the correct response for what a mechanically gated channel responds to.