Cell Structure + Transport - Diffusion, Osmosis And Active Trabsport Flashcards
1
Q
What process moves substances across cell membranes
A
Diffusion
2
Q
What is diffusion
A
The spreading out of particles of any substance, resulting in net movement from an area of higher concentration to one of lower concentration
3
Q
Which products are transported using diffusion
A
Oxygen, carbon dioxide (gas exchange)
Waste product urea from cells
4
Q
What factors affect the rate of diffusion
A
Concentration gradient
Temperature
S.A of the membrane
