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Membrane Transport, Diffusion = CPA/MW*X - Coggle Diagram
Membrane Transport
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Passive Processes
Simple Diffusion
Lipid Bilayer
Substances with a high lipid solubility (such as O2, CO2, N2, alcohols and fatty acids)
Protein Channels
Small water-soluble substances largely restricted to small ions such as H+, Na+, K+ and Ca+ (often only permit movement of one ion species = ion selective).
Facilitated Diffusion
Essential metabolic substrates (glucose, some amino acids and soluble vitamins). Mediated by similar mechanisms as simple diffusion.
Diffusion = CPA/MW*X
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C = Concentration Gradient, P = Permeability, A = Surface Area
MW = Molecular Weight, X = Distance