Diffusion & Osmosis Flashcards
1
Q
What is osmosis?
A
The movement of water molecules from an area of HWC to an area of LWC across a semi-permeable membrane
2
Q
What is turgor?
A
Turgor pressure is the pressure of the vacuole and cytoplasm against the cell wall
3
Q
What is an amoeba?
A
Amoeba survives is a less conc. environment due to its contractile vacoule, which eliminates water.
4
Q
What does selectively permeable mean?
A
Selectively permeable membranes allow some substances to pass through easily, but other substances cannot pass through easily.
5
Q
What is diffusion?
A
The movement of molecules from an area of high conc. to an area of low conc. along a conc. gradient
6
Q
What is plasmolysis?
A
Loss of water from the cytoplasm and the movement of the cell membrane away from the cell wall.
