I thought the paper was ok, yeah about the active transport question, I figured that out at the last minute and crammed it on, hope it was ok. Can't really remember it though... I suppose I just did it to get a higher a so I don't need to do as well on module 4...ARGH respiration and photosynthesis are crazy to revise.
I said that potassium ion uptake was lower at 4 (degrees c) than 18 because low temperature reduces ATP production, so less available for active transport