Movement Of Materials In And Out Of Cells Flashcards
1
Q
What is diffusion?
A
This is the movement of particles from a region of high concentration to a region of low concentration.
(Down a concentration gradient)
2
Q
What factors affect diffusion?
A
- Temperature
- Distance
- Surface are to volume ratio
- Concentration gradient
3
Q
What is osmosis?
A
The movement of water molecules from a dilute solution to a more concentrated solution across a permeable membrane
4
Q
What is active transport?
A
The movement of particles from a region of low concentration to a region of high concentration using energy from respiration
