Results are out! Find what you need...fast. Get quick advice or join the chat
Hey! Sign in to get help with your study questionsNew here? Join for free to post

AQA Biol4 15th June 2012

Announcements Posted on
Applying to Uni? Let Universities come to you. Click here to get your perfect place 20-10-2014
  • View Poll Results: Who's resitting this unit?
    Yes
    114
    68.67%
    No
    52
    31.33%

    • 5 followers
    Offline

    ReputationRep:
    how do people get unofficial mark schemes?!!?!!?
    • 2 followers
    Offline

    ReputationRep:
    (Original post by extons)
    QUESTION PAPER JUNE 2012

    I am a lower sixth biology student and I was in my classroom in which my teacher let me have a look at today's unit 4 paper. I couldn't take a paper so I quickly took photos of each page on my phone so have had to upload them one by one...sorry that it's all messy but just thought I'd be doing you a favour!

    http://d.pr/i/u2I9
    http://d.pr/i/Mmiq
    http://d.pr/i/pSlL
    http://d.pr/i/DoKe
    http://d.pr/i/Nl6o
    http://d.pr/i/ZzDf
    http://d.pr/i/VSPN
    http://d.pr/i/ft2e
    http://d.pr/i/YTjz
    http://d.pr/i/uEsN
    http://d.pr/i/85jz
    http://d.pr/i/9flt
    http://d.pr/i/lpGZ
    http://d.pr/i/DX4h
    http://d.pr/i/4dxI
    http://d.pr/i/HeIu
    http://d.pr/i/mG7E
    You're the best! :thumbsup:
    • 2 followers
    Offline

    ReputationRep:
    (Original post by asaaal)
    how do people get unofficial mark schemes?!!?!!?

    Looking the correct answer up in the book, using the mark schemes for previous papers, most common answer, etc, etc. You don't "get" them, you make them.
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Smiley Face :))
    Would the voolume of CO2 produed not just be 1cm^3 because
    the question said in experiment 1, not experiment 2. 1 had fall in volume of 5cm3 and 2 had fall in volume of 1cm3
    • 1 follower
    Offline

    ReputationRep:
    (Original post by Smiley Face :))
    Would the voolume of CO2 produed not just be 1cm^3 because
    I think it was just 4 because 5-1=4..? maybe?
    Thought it was ok at the start but what was that cellulose one on about??
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Insanity514)
    good comeback
    on a serious note, the boundaries will probably be similar to Jan
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Bright.Inspiration.)
    I knew they would ask HSW questions, I'm not surprised it was asked. I'm saying that I didn't like the question and struggled on it.

    The exam was pretty recent and people are stressed out and worried. Students have the right to express how they felt about questions :facepalm:
    If you don't like it, don't read it.
    I agree, we are not stupid we know how the paper works, it's not easy to deal with 8 questions which require hard thinking in 90 minutes, plus the pressure and the thought that our uni place depends on it does not help it...
    • 6 followers
    Offline

    ReputationRep:
    (Original post by Full-UMS!)
    on a serious note, the boundaries will probably be similar to Jan
    It ****ing better not be :mad:

    Those were tight boundaries. not cool bruv.
    • 0 followers
    Offline

    ReputationRep:
    (Original post by TheBlueNowhere)
    41 not 42.

    (0.51^0.5)*(1-0.51^0.5)*2 = 40.828... so 41% since you are only giving two sf in the question so answer should be to that accuracy.
    42 not 41

    dominant = 51% = q^2 + 2pq
    recessive = 49% = q^2

    0.49 = q^2
    0.7 = q

    p+q = 1
    p = 0.3

    2pq = heterozygous = 2 x (0.3 x 0.7) = 0.42 = 42%

    DONE. now if one more person speaks about this, i will cry
    • 1 follower
    Offline

    ReputationRep:
    (Original post by scaredd)
    42 not 41

    dominant = 51% = q^2 + 2pq
    recessive = 49% = q^2

    0.49 = q^2
    0.7 = q

    p+q = 1
    p = 0.3

    2pq = heterozygous = 2 x (0.3 x 0.7) = 0.42 = 42%

    DONE. now if one more person speaks about this, i will cry
    sh*t meant to do a thumbs up, and clicked the wrong button, how to i undo the thumbs down? sorry am new to this!
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Trollolollol)
    Bad me too, you ready for it bro? I need 32 for an A or 80 for an a*


    This was posted from The Student Room's iPhone/iPad App
    You ready for phys5?
    • 6 followers
    Offline

    ReputationRep:
    (Original post by rodders1000)
    sh*t meant to do a thumbs up, and clicked the wrong button, how to i undo the thumbs down? sorry am new to this!
    what's done has been done.

    no going back your only option is to be his slave for the next 16 years and hope he forgives you
    • 0 followers
    Offline

    ReputationRep:
    I put 4 for the CO2 output question, because I thought that it would be the difference between when there is KOH and when there is water as the KOH absorbs all the CO2
    • 0 followers
    Offline

    ReputationRep:
    (Original post by scaredd)
    42 not 41

    dominant = 51% = q^2 + 2pq
    recessive = 49% = q^2

    0.49 = q^2
    0.7 = q

    p+q = 1
    p = 0.3

    2pq = heterozygous = 2 x (0.3 x 0.7) = 0.42 = 42%

    DONE. now if one more person speaks about this, i will cry
    Ah **** so it is. I put 0.51 as q^2 by accident. Hopefully I get some marks.
    • 0 followers
    Offline

    ReputationRep:
    (Original post by NightBear)
    It ****ing better not be :mad:

    Those were tight boundaries. not cool bruv.
    yeah true, if i had made one more mistake i would've got a B :/
    • 5 followers
    Offline

    ReputationRep:
    (Original post by Full-UMS!)
    on a serious note, the boundaries will probably be similar to Jan
    Probably, maybe few marks lower by what people have said on here compared to Jan
    • 6 followers
    Offline

    ReputationRep:
    (Original post by Full-UMS!)
    yeah true, if i had made one more mistake i would've got a B :/
    yup. and the difference between 80 and 'full UMS' () was 8 marks. :x
    • 5 followers
    Offline

    ReputationRep:
    what did you guys put for 4c??
    • 6 followers
    Offline

    ReputationRep:
    anyone agree with me that this was harder than jan
    • 0 followers
    Offline

    ReputationRep:
    (Original post by kingam)
    I do
    yeah i do
Updated: November 24, 2012
New on TSR

Personal statement help

Use our clever tool to create a PS you're proud of.

Article updates
Reputation gems:
You get these gems as you gain rep from other members for making good contributions and giving helpful advice.