diffusion, osmosis and active transport Flashcards
1
Q
how do dissolved substances move in and out of cells
A
diffusion or active transport
2
Q
what is the definition of diffusion
A
The movement of particles from an area of high concentration to an area of low concentration through a semi-permeable membrane
3
Q
diffusion of water particles is known as what
A
osmosis
4
Q
define active transport
A
The movement of particles from an area of low concentration to an area of high concentration
5
Q
what is needed for active transport to take place
A
Energy
6
Q
explain why a piece of potato will decrease in mass when placed a high concentration solution of sucrose
A
because water will move out of the potato through osmosis
