Osmosis: a special case of diffusion

Question 1

water potential

Answer 1

a measure of the potential for water to move out of a solution by osmosis

Question 2

osmotic concentration

Answer 2

a measure of the concentration of the solutes in a solution that have an osmotic effect

Question 3

isotonic solution

Answer 3

a solution in which the osmotic concentration of the solutes is the same as that in the cells

Question 4

hypotonic solution

Answer 4

a solution in which the osmotic concentration of solutes is lower than that in the cell contents

Question 5

hypertonic solution

Answer 5

a solution in which the osmotic concentration of solutes is higher than that in the cell contents

Question 6

hydrostatic pressure

Answer 6

the pressure exerted by a fluid in an equilibrium

Question 7

turgor

Answer 7

the state of a plant cell when the solute potential causing water to be moved into the cell by pinocytosis is balanced by the force of the cell wall pressing on the protoplasm

Question 8

incipient plasmolysis

Answer 8

the point at which so much water has moved out of the cell by osmosis that turgor is lost and the cell membrane begins to pull away from the cell wall as the protoplasm shrinks

Question 9

plasmolysis

Answer 9

the situation when a plant cell is placed in hypertonic solution when so much water leaves the cell by osmosis that the vacuole is reduced and the protoplasm is concentrated and shrinks away from the cell walls