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A2 Biology OCR June 2015 Revision Thread

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I screwed up the dialysis stuff :frown: otherwise it was okay but I think I've made silly errors like RBC and the kidney table thing Ahh, opinions on grade boundaries? Similar to last year?
was it range bars? i have no idea why i thought of that, i don't think I've ever heard of them before..
Original post by Lilenthia
I put down the water potential is lowered so red blood cells don't burst >_<


Same!
what did you guys put for the one about the significant increase with the table?
The range of emotions I went through whilst sitting this paper (F214):
😭😭😥😰😓😖😫😨😱😠😡😤😤😖


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Original post by ForeignHamster
Yep 93.4 ! And error bars im sure..


Didn't you round the number to 93?


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Can't believe I had to go all the the way back to year 10 to remember the range bar things
I put deviation of the mean but it's error bars
Original post by goonieskellie
what did you guys put for the one about the significant increase with the table?


i put the one from 2.3 to 11.5 because it had the largest percentage increase, but i think i may be wrong
Original post by goonieskellie
what did you guys put for the one about the significant increase with the table?


The renal something or another. It was 5x more prevalent in over 65;s
Original post by corey7695
was it range bars? i have no idea why i thought of that, i don't think I've ever heard of them before..

Its standard deviation.
I wrote range of incidence D:
What on earth was the difference between the peritoneum and the artificial membrane?

I said the artificial membrane removes waste AND adds required substances (e.g. glucose), while the peritoneum ONLY removes waste.

But I'm fairly sure that's wrong.
**** my life that exam was awful why the **** did I learn all the f***** cycles 😡😡😡😡 all my hours of revision for nothing you didnt need to know biology for that exam and the dyalisis question was horrible 😭😭
Original post by bbadonde2
The renal something or another. It was 5x more prevalent in over 65;s


oh god, i was really confused which way round it meant, like an increase from older to younger, or younger to older
Original post by corey7695
i put the one from 2.3 to 11.5 because it had the largest percentage increase, but i think i may be wrong


i also put that one!
Original post by Faithams
Its standard deviation.
I wrote range of incidence D:


i just googled range bars and it looks pretty similar..
Original post by swagster
i put inner membrane, stroma, granum


same :smile:
Original post by jas9799
i said range bars


Do you think error bars would get a mark?
Original post by TommyHoang
Didn't you round the number to 93?


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In my working i had something like 93.39 then wrote 93.4 , did they specify dp places?? But in that column they had 3 sf so i just put that. Otherwise it shouldnt matter if they didnt specify it..
Original post by jas9799
i also put that one!


i also worked it out as having a 400% increase, which was larger than the others, but i wasn't sure haha

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