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AQA BIOL2 Biology Unit 2 Exam - 26th May 2011

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Reply 1680
Avatar for ReMos
ReMos
9
does anyone have an estimated 'markscheme' for the 6 marker at the end?
uknow for the one about frogs eggs? i sed eutrophication :/ i mean i describe the process and how less oxygen would be available due o less plants photosynthesis'ing what do you reckon on that? so as a result the eggs respire less xxxx
(edited 12 years ago)
Original post by Stratos
What do you guys need to get your firm offer?

I need at least a A...


awkward..
most of us are in AS.
Original post by EffKayy
why there's more amino acids or bases? not sure
It was introns.


Yeah introns, but where does eukaryote come into it though?
Reply 1684
Avatar for ReMos
ReMos
9
im applying to cambridge so hoping probably will need 143 A*s
nah, joking (if people didnt already get that).

and im also year 12 so i dont know the offer, even though the cambridge offer is the same almost always :smile:
(edited 12 years ago)
what did everyone put for the percentage question? :smile:
Original post by Wick3d
Yeah introns, but where does eukaryote come into it though?


NVM!!!!!! :P
Original post by ReMos
does anyone have an estimated 'markscheme' for the 6 marker at the end?


Antibiotics kill the non resistant bacteria
The resistant bacteria then grow in population
They contain a plasmid for survival
They pass the plasmid through horizontal transmission
Via conjugation
Reply 1688
Avatar for ryan02
ryan02
10
Original post by EffKayy
why there's more amino acids or bases? not sure
It was introns.


i wrote about it being a degenerative code, ie more than one triplet can code for the same amino acid, is that wrong?? :/
What did you guys put for the question about putting grease on leaves on set B? Where it said to explain the difference, and the one below that.
Original post by Introverted moron
Because it's the raw grade boundary that changes with every exam series. The UMS stays the same.

It doesn't quite work like that. You could lose 10 raw marks and still come out with 140 UMS for this paper.

http://web.aqa.org.uk/UMS/index.php?id=04

Edit: Beaten to it. :tongue:



Well using that converter it shows 59 marks = bang on a UMS A for the June 2010.


I'm very confident I could make a grade boundary like that. I'm worried I might have dropped 15 marks in the worst case scenario, maybe just 6 in the best case, but nowhere near 27. It was a good exam for me :smile:
Reply 1691
Avatar for ReMos
ReMos
9
Yeah introns, but where does eukaryote come into it though?



introns, stop/start codons, some amino acids require more than one triplet, minisatelites, everything really
Original post by PumbaWiggles
what did everyone put for the percentage question? :smile:

55.56% Not sure how I got it now cos I forgot the values.
Original post by ryan02
i wrote about it being a degenerative code, ie more than one triplet can code for the same amino acid, is that wrong?? :/


yeah thats right. :smile:
prediction on g.b? I hope i've scraped an A, made too many mistakes!!
Original post by James A
Antibiotics kill the non resistant bacteria
The resistant bacteria then grow in population
They contain a plasmid for survival
They pass the plasmid through horizontal transmission
Via conjugation

I also put down greater proportion of resistant bacteria
Original post by PumbaWiggles
what did everyone put for the percentage question? :smile:


55%
will anyone be putting a mark scheme on :wink:
Original post by EffKayy
NVM!!!!!! :P


:biggrin:
Reply 1698
Avatar for ReMos
ReMos
9
the prentage question was 55%-56%

1-(14/9.5)=0.55555
0.55555 x 100=55%/56%
Original post by xkate1019x
will anyone be putting a mark scheme on :wink:


I'm sure someone will piece together an unofficial mark scheme soon. If not just discuss the answer you really want to talk about.

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