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AQA AS Biology A

well, i hope everyone didn't find it too traumatic! i thought we should have our own thread seeing as everyone else had their own.

:smile:

Reply 1

fazi

yeah pretty good.. hated that cellulose question argh.. dropped some marks there! relaly annoyed about that.

Reply 2

Brianna-7

The Module One paper was really good tho!

Reply 3

kiaora

OP

1

yer that cellulose one was really difficult. that one about the K+ ions- i put that it was something to do with active transport - but then again im not sure if i got it right. i suppose it wasn't too bad. fingers crossed!

Reply 4

spoon1

13

Does cellulose coil up into a helix? Cos that's what I put :P i thought that would make it elastic so the cell wall could stretch and not burst...

Reply 5

Saffie

11

spoon1

Does cellulose coil up into a helix? Cos that's what I put :P i thought that would make it elastic so the cell wall could stretch and not burst...

no it looks like a pleated sheet, straight chans held together by H bonds, i've seen that Q somewhere before :confused:

i was well chuffed when i saw it!

Reply 6

spoon1

13

Loopz

no it looks like a pleated sheet, straight chans held together by H bonds, i've seen that Q somewhere before :confused:

i was well chuffed when i saw it!

damn!

Reply 7

spoon1

13

By the way, did anybody find that question about Saddam Hussein's toothbrush rather hilarious?

Reply 8

Saffie

11

spoon1

By the way, did anybody find that question about Saddam Hussein's toothbrush rather hilarious?

i didn't read it properly, omg was that his toothbrush they were talking about?!
yea i read the Q on genetic fingerprinting and then it said hows it used on saddam hussein and i giggled :smile:

contextualisation is rather amusing i suppose

Reply 9

wednesburywench

2

as a risitter i found the paper 1 easy, however that cellulose question seemed hard to get 6 points from. cellulose is formed from beta glucose sheets which are flipped over to for the glycosidic bonds. I think i only got about 4 still! and i didnt like the potassium question, the respiration was obviously cus of the oxygen increase (but thats not till module 5 is it???!!) and the pottasium ions i put they aid facillitated diffusion cus they are taken in by this but we didnt learn this till unit 6, so i dont know what they were after!!! Didnt like the straw question bout why it was done at 80-90c anyone know wat that was? just went blank. The heart and lungs stuff was a lot easier than last yrs exam! overall a nice paper.

Reply 10

Kiesha

10

spoon1

By the way, did anybody find that question about Saddam Hussein's toothbrush rather hilarious?

Lol, yes

wednesburywench

I think i only got about 4 still! and i didnt like the potassium question, the respiration was obviously cus of the oxygen increase (but thats not till module 5 is it???!!) and the pottasium ions i put they aid facillitated diffusion cus they are taken in by this but we didnt learn this till unit 6, so i dont know what they were after!!!

That wasn't too hard, I don't think. Oxygen increased, therefore respiration increased. Increased respiration means more ATP produced and therefore the K+ ions could be moved into the cell by active transport against their conc. gradient...? Well, that's what I put anyway.

Reply 11

ky1986

Kiesha

Lol, yes

That wasn't too hard, I don't think. Oxygen increased, therefore respiration increased. Increased respiration means more ATP produced and therefore the K+ ions could be moved into the cell by active transport against their conc. gradient...? Well, that's what I put anyway.

ye thats wat i put. for the straw qn i said that if heated above 90C the straw would burl LOL... stupid i know and i saw it was a 2 marker so i sed that other components other than water would also evaporate. hmmm not sure tho! cellulose qn was bare hard and i think i lost loads of like 1 mark qns cos bio is hard to write perfect answers for cos they want specific phrases :mad:

Reply 12

hussain

That wasn't too hard, I don't think. Oxygen increased, therefore respiration increased. Increased respiration means more ATP produced and therefore the K+ ions could be moved into the cell by active transport against their conc. gradient...? Well, that's what I put anyway

exactly what i put down...like literally, i think even the wording was the same as mine lol freaky mate

the lungs question when we had to skecth a curve how did u all draw it??

i did from decreasing and then increased as time progressed and then decreased again..but i was confused about this and have a feelin i done it wrong, but what did u all do...lets hope i got it right !!lol

AQA AS Biology A

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