Movement in and out of cells
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What is diffusion
The net movement of particles from an area of high concentration to an area of low concentration moving down the concentration gradient
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Is diffusion a passive process
Yes
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What is a passive process
The process requires NO energy
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What size must the molecules be in diffusion to move around
Small
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Does diffusion happen in solids? Explain why
No - the particles are in a fixed position
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What is the relationship between the DISTANCE IN CONCENTRATION and the SPEED OF THE DIFFUSION RATE
The bigger the difference in concentration the faster the diffusion rate
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Note 
Flashcards (35)