Didn't think this paper was too bad, some tricky questions though, i really didnt like question 9 on snakes and the Haemoglobin one
Also, anyone got the specific marking points for the 6 marker? Mine was sort of like this: (i think i got some parts confused)
-water moves into routes by osmosis, high to low water potential
-low wp in roots due to mineral ions
-apoplast/symplastic pathway
-mineral ions actively transported into xylem to create wp gradient??
-water moves viea osmosis from high to low wp from room to xylem
-moves up xylem against gravity
-cohesion tension, H2O molecules 'stuck' together,transpiration causes 'pull' up
-water moves by osmosis into leaves from high to low wp
Is that right/enough for 6 marks do you think?
What does everyone think the grade boundaries are going to be like?
I hope I've done enough to get my A overall