Movement Across Membranes

Quick mindmap of:

Facilitated Diffusion 

Simple Diffusion

Active Transport 

Osmosis 

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  • Created by: Micah
  • Created on: 09-04-14 17:51
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  • Movement Across Membranes
    • Diffusion
      • The net movement of molecules from an area of high concentration an area of low concentration
      • It is a passive process
      • Examples of molecules: CO2, O2
    • Facilitated Diffusion
      • The movement of molecules from an area of high concentration to an area of low concentration using membrane proteins.
      • It is a  passive process
      • It uses membrane proteins e.g. channel proteins/carrier proteins
      • Example molecules: glucose, Na+, Cl-
    • Active Transport
      • The movement of molecules from an area of high concentration to an area of low concentration using membrane proteins and ATP.
      • It is an ACTIVE process.
      • Uses channel proteins/carrier proteins
      • Example molecules: Na+ or Cl-
    • Osmosis
      • The net movement of water molecules from an area of high concentration to an area of low concentration across a semi-permeable membrane
      • It is a passive process
      • Example molecules: H2O

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