4.1.3.2 Osmosis — AQA Combined Science Trilogy 8464

Describe osmosis as a specific mechanism by which water moves across cell membranes.
Define osmosis as the diffusion of water from a dilute solution to a concentrated solution through a partially permeable membrane.
Use simple compound measures to determine and interpret the rate of water uptake.
Calculate percentages, including the accurate percentage gain and loss of mass in plant tissues during osmotic processes.
Plot, draw, and interpret appropriate graphs related to osmotic changes.
Investigate the effect of a range of salt or sugar solution concentrations on the mass of plant tissue through practical laboratory application.

Osmosis