Movement of Water from cell to cell:

Question 1

Movement from cell to cell:

Answer 1

Water potential is a measure of tendency of water molecules to move from one place to another. The water potential of pure water is 0, and the rest are negative. Mineral ions/solutes reduce water potential.
Note: The more negative a water potential is (kPa) the lower it is. Water moves to more negative water pot.

Question 2

Hypotonic solution

Answer 2

Hypotonic solution – higher water potential (higher hydrostatic/lower oncotic) in solution than cytoplasm of cell. Water osmoses down the water-potential gradient, into the cell. Cellulose cell wall prevents bursting. Once the cell is turgid, the water inside exerts a pressure on the cell wall, which reduces the influx of water.

Question 3

Hypertonic

Answer 3

Hypertonic – higher water potential in cell cytoplasm than solution. Water osmoses out of the cell, down the water potential/hydrostatic pressure gradient. The vacuole and cytoplasm shrink, cytoplasm no longer pushes against cell wall – no longer turgid. Eventually plasma membrane will leave contact with the cell wall – plasmolysis.

Question 4

plant cell is in an isotonic solution

Answer 4

If a plant cell is in an isotonic solution (water potential same inside and out of cell), it is flaccid.