OCR F211 May 25th Biology

To do with the movement of water through the root cortex and out of the leaves etc.. anyone know what key words they would have been looking for?

Also I wasnt sure if it should be water potential or water vapour potential.. That question just seemed to be more of a waffley question than being able to make key points.

I seemed to know what I was writing for the most of it though e.g. the 5+ mark questions but on the 2 mark questions I think I just waffled about the first point hoping I'd get 2 marks for it.

Well done all.

I thought you had to describe the ways water travelled up the xylem in that question, so I talked about transpirational pull, capilliary action and root pressure.

For the yeast question did anoyone put something along the lines of the transporter/pump proteins denaturing at higher temperatures?

any answers on the methylene blue q...i pretty much the same answer for part b,c,and d. The high KE and the molecules moving faster and the membrane getting leaky!
also for the part a of that q...i put that 50% should be in the solution and 50% should be stained cells to be diffusion??

BIG BLOODY OOPS.

Was the question how does it travel up the roots and out through the leaves or how does it travel through the xylem and out through the leaves?

'Cause if it was root, I should get some credit because I talked about the active transport of minerals changing the water potential in the different layers of cells and thereby creating a transpiration movement across the entire root cortex..

yep 75 bpm here too

I really cant remember, but Im hoping it was asking about the xylem so I get 5 marks
Im sure someone here knows what it was

BIG BLOODY OOPS.

Was the question how does it travel up the roots and out through the leaves or how does it travel through the xylem and out through the leaves?

'Cause if it was root, I should get some credit because I talked about the active transport of minerals changing the water potential in the different layers of cells and thereby creating a transpiration movement across the entire root cortex..

same here ut i sort of guessed because i wasnt sure if you measure from P to T or P to P

OMG!!! I hated every question on that paper, i think am gonna be retaking in jan, what do you think the grade boundaries will be like this time, cuz in jan it was like 40/60 for an A sooo hopefully itll be the same this time.

Add on the others I truly didn't know instead of just careless mistakes and I'd be lucky to get an A. Hope boundaries are low and everyone else seriously ****ed up, it's a retake as well and I need that A!!!

BIG BLOODY OOPS.

Was the question how does it travel up the roots and out through the leaves or how does it travel through the xylem and out through the leaves?

i wrote about the root first and then read the question again, it said from roots to the leaves so hopefully that might include roots...
I mentioned:
- adhesion
- cohesion
- tension
- water potential
- pressure gradient.

I thought hey even if i dont know what the words mean i must get some marks for mentioning key words