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  • Created by: Jodie
  • Created on: 06-04-16 14:20
what is diffusion
when molecules can spread to high and low concentration
1 of 6
What small molecules can pass through a membrane easily
oxygen, water and carbon dioxide
2 of 6
why do cells need food substances
so they can digest food, need water to stay alive and they need to expel carbon dioxide
3 of 6
what are the diffusion factors
temperature,pressure and distance
4 of 6
what can also speed up the rate of diffusion
enzymes
5 of 6
Is diffusion the only way they can leave and enter the cell
no they can work against concentration difference through active transport
6 of 6

Other cards in this set

Card 2

Front

oxygen, water and carbon dioxide

Back

What small molecules can pass through a membrane easily

Card 3

Front

so they can digest food, need water to stay alive and they need to expel carbon dioxide

Back

Preview of the back of card 3

Card 4

Front

temperature,pressure and distance

Back

Preview of the back of card 4

Card 5

Front

enzymes

Back

Preview of the back of card 5
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