Has anyone done the osmosis prac on potatoes?
If yes, what were some of the questions asked? I have my sac on tuesday and I want to cover EVERYTHING!!!
You'll need to be able to relate changes in the potato cells with the nature of the cellular and external fluid, and explain that in terms of osmosis. That's pretty much what that prac is going to be about. Being able to describe under what circumstances osmosis will occur and also explain
why it will occur. The same will go with diffusion, you must be able to relate that to the concentrations externally and internally, as well as to osmosis—why will diffusion occur in some circumstances, and osmosis in others?
Lastly, I expect that you'll need to make some sort of comment on turgour pressure. You may be asked to comment on why lysis doesn't occur.