Chapter 13:Diffusion and Osmosis Flashcards
1
Q
biological membranes
A
Are cell membranes and membranes of organelles or nuclear membranes
2
Q
Diffusion
A
Is spreading out of molecules from a region of high concentration to a region of low concentration
3
Q
passive process
A
no energy required
4
Q
Osmosis
A
Is the movement of water molecules from a region of high water concentration to a region of low water concentration.
5
Q
active transport
A
Is the movement of molecules against the concentration gradient [low to high concentration ]
6
Q
Solvent
A
Water is a good solvent (can dissolve many things)
7
Q
Solute
A
A substance that dissolves in the solvent (sugar or salt)
8
Q
Solution
A
Solvent and solute together (salty water)
9
Q
turgor pressure
A
Cell membrane pushed out against the cell wall.
