Movement Across Membranes
Quick mindmap of:
Facilitated Diffusion
Simple Diffusion
Active Transport
Osmosis
- 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
- Diffusion
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