Cell transport Flashcards
1
Q
Give a definition for diffusion?
A
Movement of molecules from a high to a low concentration, down a concentration gradient.
2
Q
Give a definition of osmosis?
A
Movement of WATER molecules from a high to a low concentraion, down a concentration gradient.
3
Q
Is diffusion passive or non passive?
A
Passive.
It requires no energy.
4
Q
What subsatnce move into the cell through diffusion?
A
Oxygen and Glucose.
5
Q
What waste substance move out of the cell?
A
Carbon Dioxide and Urea.
6
Q
Whats the structure of the plasma membrane?
A
Phosplids and protien.
