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Membrane Structure + Function - Coggle Diagram
Membrane Structure + Function
Cellular Membranes are Fluid Mosaics
Fluidity of Membranes
Definition:
Membranes held together by weak hydrophobic interactions
Example
Membranes either liquifying or solidifying based on temperature
Differences in Membrane Lipid Composition
Definition:
Lipid composition is adapted to environmental conditions in many organisms
Example
In fish that live in extreme cold, cell membranes have a higher proportion of unsaturated hydrocarbon tails
Membranes in Selective Permeability
Definition:
The exchange of materials between cells and their surroundings
Example
Phospholipids
Fatty acid tails
Saturated
Unsaturated
Passive Transport
Definition:
The movement of small molecules across a cell membrane
Example
Facilitated diffusion
Active
Transport
Definition:
Enables cells to maintain solute concentrations that differ from environment
Example
Sodium-potassium pump
Bulk Transport
Definition:
The movement of large molecules through a cell membrane
Example
Exocytosis
Endocytosis