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BIOL4 Biology Unit 4 Exam - 13th June 2011 watch

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    (Original post by Godinferno)
    I swear the question said something like, "The breeder expected to obtain half black and half chocolate offspring, why in practise is this not always the case"?

    So random fusion of gametes should be a correct answer.

    Also what did you put down for 8b) about how atmospheric CO2 concentrations change? I put it increased due to direct burning of the trees leading to CO2 being released into the atmosphere and less uptake of CO2 from photosynthesis. I can't think of the other mark?
    it was only four marks so that would be 2 and then the other 2 would be for burning vegetation means less photosynthesis and the release of c02.. it was a werid question.

    what do you think grade boundaries will be?
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    ive created a facebook page in protest against unit 4 exam! join wont let me post so search
    Protest agains Edexcel biology unit 4 exam - 13/06/11
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    for 1d i wrote

    humans need ATP as they require energy for muscle contraction in movement but also need more ATP for growth

    for one of the feather mites i wrote - mites eat the pathogenic bacteria and die so oil from feathers is no longer digested and so the birds can maintain the body temperature and so are more likely to survive to a breeding age, resulting in increase breeding

    tbh my answers do make sense so AQA best be offering alternative answers as it looks like all of u got different answers to me LOL
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    (Original post by Flux_Pav)
    for 1d i wrote

    humans need ATP as they require energy for muscle contraction in movement but also need more ATP for growth

    for one of the feather mites i wrote - mites eat the pathogenic bacteria and die so oil from feathers is no longer digested and so the birds can maintain the body temperature and so are more likely to survive to a breeding age, resulting in increase breeding

    tbh my answers do make sense so AQA best be offering alternative answers as it looks like all of u got different answers to me LOL
    haha yeh my answer to the bacteria one was different I said: mites eat pathogenic bacteria and fungus so it is less likely that the tits will contract disease from the bacteria or fungus infections. therefore less energy is used in fighting disease and more can be used for reproduction and breeding behaviour so the number of successfull breeds are likely to increase.
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    (Original post by Liron Ingleby)
    it was only four marks so that would be 2 and then the other 2 would be for burning vegetation means less photosynthesis and the release of c02.. it was a werid question.

    what do you think grade boundaries will be?
    I think you'd also get a mark for saying that the concentration of CO2 in the atmosphere increased as the question asked something like "What would be the effect of this on the CO2 concentration."

    I reckon the grade boundaries will be high for this, it was a pretty respectable paper.
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    (Original post by SK-mar)
    haha yeh my answer to the bacteria one was different I said: mites eat pathogenic bacteria and fungus so it is less likely that the tits will contract disease from the bacteria or fungus infections. therefore less energy is used in fighting disease and more can be used for reproduction and breeding behaviour so the number of successfull breeds are likely to increase.
    I said the same thing on this question too!

    Also, I know this was only one mark but what is the advantage of using the natural fertiliser over artificial fertilisers?
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    (Original post by Godinferno)
    I said the same thing on this question too!

    Also, I know this was only one mark but what is the advantage of using the natural fertiliser over artificial fertilisers?
    I said: Natural fertilisers are slow acting so they don't need to be applied as often which saves time for the farmer.

    Where was this question again? i remember it but cant remember where it was in the paper. was it a part of question 2?
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    I want 80+ ums. Waaaaaaaaaaaaaaaaaa
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    (Original post by claire4095)
    ive created a facebook page in protest against unit 4 exam! join wont let me post so search
    Protest agains Edexcel biology unit 4 exam - 13/06/11
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    this isnt the edexcel thread.
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    (Original post by SK-mar)
    I said: Natural fertilisers are slow acting so they don't need to be applied as often which saves time for the farmer.

    Where was this question again? i remember it but cant remember where it was in the paper. was it a part of question 2?
    It was part of the question with the anaerobic digester, not sure what question that was though.
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    (Original post by joyciejones23)
    There was a tick in every box for yours? I put a cross in production of ATP for pss, becuase net production was 0, also electron transport doesn't occur in either anaerobic respiration or photosynthesis.. Also, the mite question was horrible!!
    as i rember it thhe questions asked you to tick or leve blank
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    (Original post by Flux_Pav)
    I want 80+ ums. Waaaaaaaaaaaaaaaaaa
    haha, don't we all! oh well, it's done now.. no going back!
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    (Original post by Superlogon)
    this isnt the edexcel thread.
    yes it is. http://www.facebook.com/pages/Protes...30890383657523

    i should know, i made it lol
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    (Original post by claire4095)
    yes it is. http://www.facebook.com/pages/Protes...30890383657523

    i should know, i made it lol
    this thread is for AQA not edexcel...
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    (Original post by Godinferno)
    I said the same thing on this question too!

    Also, I know this was only one mark but what is the advantage of using the natural fertiliser over artificial fertilisers?
    I put something like if they use organic fetiliser then the produce can be branded as organic and therefore sold for more... I'm not sure about that now though
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    (Original post by claire4095)
    yes it is. http://www.facebook.com/pages/Protes...30890383657523

    i should know, i made it lol
    This is the AQA thread, not edexcel.

    Your page that you made, is for the edexcel exam.

    Also, surely you would have noticed that people on here weren't talking about the content that was in your exam :s
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    (Original post by supernova92)
    This is the AQA thread, not edexcel.

    Your page that you made, is for the edexcel exam.

    Also, surely you would have noticed that people on here weren't talking about the content that was in your exam :s
    Obviously just sh*t herself in the paper and is trying to get as many as people as possible in to lower the grade boundries extortinatly again.
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    Oh maaaaan, on the first question where you do the ticks, I ticked the right places, but on the ones you're supposed to leave blank I put crosses. I'm not going to get marked wrong for that, am I? :/
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    (Original post by joyciejones23)
    There was a tick in every box for yours? I put a cross in production of ATP for pss, becuase net production was 0, also electron transport doesn't occur in either anaerobic respiration or photosynthesis.. Also, the mite question was horrible!!
    It didn't say to cross though? And yeah ik, but it wasnt talking about net so just assumed, that's a fault on behalf of AQA tbh. And there is an ETC in light dependent stage. And yeah but I somehow managed to blag my way through that lol!
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    (Original post by Superlogon)
    Obviously just sh*t herself in the paper and is trying to get as many as people as possible in to lower the grade boundries extortinatly again.
    you got it! Our paper was horrendous!
 
 
 
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