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 molecules is known as what?
A
Osmosis
4
Q
Define active transport.
A
The movement of particle 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 in high concentration solution of sucrose?
A
Because water will move out of the potato through osmosis
