diffusion and osmosis Flashcards
1
Q
What is diffusion
A
A movement of particles from an area of high concentration to an area of low concentration
2
Q
Does diffusion require energy
A
No
3
Q
How can we increase the rate of diffusion
A
-by increasing:
the temperature
the surface area
and the difference in concentrations
4
Q
What is osmosis
A
The movement of water molecules from an area of high concentration to an area of low concentration across a partially permeable membrane
5
Q
What is active transport
A
The movement of molecules from an area of lower concentration to an area of higher concentration against a gradient