water potential and solutions

Question 1

Solute

Answer 1

A substance that dissolves in a solvent to form solution

Question 2

Water potential

Answer 2

Pressure created by water molecules
Measured in kilopascals
Pure water =0
Addition of a solute to water lowers its water potential
The more solute added the more negative the water potential of that solution

Question 3

Definition of osmosis in terms of water potential

Answer 3

Net movement of water molecules
From a region where there is a higher water potential to a region where there is a lower (more negative) water potential
Through a selectively permeable membrane

Question 4

protoplast

Answer 4

Everything in plant cells excluding the cell wall

Question 5

Incipient plasmolysis

Answer 5

No net movement of water in and out of the cell
Cell is in a state of incipient plasmolysis where the protoplasm is just pulling away from the cell wall

Question 6

Turgid

Answer 6

Enlarged and swollen with water

Question 7

Plasmolysed

Answer 7

To much water moves out of a plant cell and it shrinks