The diffusion of water through a partially permeable membrane from a more dilute solution to a more concentrated solution
1 of 15
Partially permeable membrane
a barrier that permits the passage of some substances but not others; it allows the passage of solvent molecules but not some of the larger solute molecules (an example is the cell membrane)
2 of 15
Flaccid
a plant cell that is limp
3 of 15
Turgid
a plant cell fully inflated with water
4 of 15
Plasmolysed
a plant cell that has lost water, causing the cell membrane to pull away from the inside of the cell wall
5 of 15
Crenation
shrinking an animal cell by osmosis
6 of 15
Lysis
bursting an animal cell by osmosis
7 of 15
Visking tubing
an artificial partially permeable membrane
8 of 15
Turgor
the pressure of the swollen cell contents against the cell wall when the external solution is more dilute than the cell sap of the vacuole
9 of 15
Polar molecule
a molecule that has a partially positive and a partially negative charge
10 of 15
Hypertonic
a solution with a higher concentration of solute (dissolved substance) and a lower water potential than some another solution
11 of 15
Isotonic
when two solutions have the same concentration of solute across a semipermeable membrane. This state allows for the free movement of water across the membrane without changing the concentration of solutes on either side
12 of 15
Hypotonic
a solution that has a lower concentration of solute (dissolved substance) and a higher water potential than another solution
13 of 15
Water potential
a measure of the tendency of water molecules to move from one place to another
14 of 15
Reverse osmosis
the process by which the liquid solvent moves across the semi-permeable membrane against its concentration gradient i.e. from low solvent concentration to high solvent concentration in the presence of externally applied pressure on the solution
15 of 15
Other cards in this set
Card 2
Front
a barrier that permits the passage of some substances but not others; it allows the passage of solvent molecules but not some of the larger solute molecules (an example is the cell membrane)
Back
Partially permeable membrane
Card 3
Front
a plant cell that is limp
Back
Card 4
Front
a plant cell fully inflated with water
Back
Card 5
Front
a plant cell that has lost water, causing the cell membrane to pull away from the inside of the cell wall
Comments
No comments have yet been made