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Lipids, Membranes, and Metabolism - Coggle Diagram

- - - - Fatty acid composition (saturation level)
      - Cholesterol content (stabilizes fluidity)
      - Temperature effects (higher temp = increased fluidity)
      - Lipid Rafts: Cholesterol-rich membrane regions for signaling
    - - Hydrophobic molecules: Diffuse freely
      - Ions & Polar molecules: Require transport proteins
- - - - Simple Diffusion: Small, non-polar molecules
      - Facilitated Diffusion: Transport via protein channels (e.g., Na+, K+)
    - - Primary Active Transport: Direct ATP usage (e.g., Na+/K+ ATPase)
      - Secondary Active Transport: Uses electrochemical gradients
    - - Voltage-gated channels (e.g., nerve impulses)
      - Ligand-gated channels (e.g., neurotransmitters)
      - Ion Selectivity: K+ channels are 100x more selective for K+ over Na+