Diffusion
- Created by: Ellie Rivers
- Created on: 08-05-13 20:12
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- Diffusion
- Rate of Diffusion
- thickness of surface
- the thinner the surface. the faster the rate of diffusion
- surface area
- the larger the area, the faster the rate of diffusion
- concentration gradient
- the greater the difference, the faster the rate of diffusion
- thickness of surface
- Facilitated Diffusion - protein channels
- occurs down a concentration gradient
- happens at specific places on the plasma membrane
- protein channels across the membrane
- allow water soluble molecules to pass through
- Facilitated Diffusion - carrier proteins
- molecules bind with the protein, forcing it to change shape
- releases the molecule on the inside of the membrane
- span the plasma membrane
- Explanation of Diffusion
- from an area of high concentration to an area of low concentration
- a large concentration gradient means diffusion is rapid
- the net movement of molecules
- when particles are evenly distributed they are in dynamic equilibrium
- Rate of Diffusion
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