Diffusion Flashcards
1
Q
Where does diffusion happen?
A
In both solutions and gases
2
Q
Why does diffusion happen in liquids and gases?
A
Particles in these substances are free to move about randomly
3
Q
The bigger the difference in concentration…
A
The faster the diffusion rate
4
Q
Diffusion also occurs on …
A
Cells
5
Q
Cell membranes are clever because …
A
They hold the cell together but let stuff in and out as well
6
Q
What substances can move in and out of cells by diffusion?
A
Dissolved substances
7
Q
What molecules Can only diffuse through cell membranes?
A
Very small molecules like oxygen , glucose , amino acids and water.
8
Q
What is the meaning of diffusion?
A
DIFFUSION is the spreading out of particles from an area of HIGH CONCENTRATION to an area of LOW CONCENTRATION
