Diffusion and Osmosis Flashcards
1
Q
Diffusion
A
Movement of molecules of a liquid/gas from a region of high concentration to a region of low concentration. Passive process.
2
Q
Example of diffusion
A
Perfumes
3
Q
Selectively permeable membrane
A
Allows some molecules to pass through but no others.
4
Q
Osmosis
A
Movement of water molecules from a high water concentration to a low water concentration across a semi permeable membrane. Passive process.
5
Q
Turgor
A
Pressure of the vacuole and cytoplasm against the cell wall.
6
Q
Cell inflated/ low concentration
A
Turgid/ strong
7
Q
Cell deflated/ high concentration
A
Plasmolysed/ weak
8
Q
Osmosis in food preservation
A
Soaking fish and meat in very salty solutions preserves them.
