Chapter 2 of 23 · Cell Biology
Membranes Transport
14 lessons in this chapter. Work through them in order, or jump to the one you need.
- The Fluid Mosaic Model of the Plasma Membrane
- Membrane Lipids: Glycerophospholipids, Sphingolipids, and Cholesterol
- Cholesterol as a Fluidity Buffer
- Lipid Rafts and Membrane Microdomains
- Membrane Proteins: Integral, Peripheral, and Lipid-Anchored
- Membrane Permeability: What Crosses the Bilayer and Why
- Chemical vs. Electrical Gradients: The Electrochemical Gradient
- Simple Diffusion Across Membranes
- Facilitated Diffusion: Carriers and Channels
- Primary Active Transport: The Na⁺/K⁺ ATPase and Ca²⁺ ATPase
- Secondary Active Transport: Symport and Antiport
- Ion Channels: Voltage-, Ligand-, and Mechanically Gated
- The Resting Membrane Potential
- Patch-Clamp Electrophysiology: The Gigaseal and Single-Channel Recording