movement of molecules Flashcards
1
Q
definition of diffusion
A
net movement of molecules from an area of high concentration to an area of low concentration
2
Q
definition of osmosis
A
the net movement of water molecules from an area of high water potential to an area of low water potential through a partially permeable membrane
3
Q
definition of active transport
A
movement of molecules from an area of low concentration to an area of high concentration across a partially permeable membrane, using energy from respiration (active process)
4
Q
describe 4 factors that affect the rate of diffusion
A
- temperature
- surface area
- distance
- concentration gradient
