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    (Original post by maniacsandwichbar)
    I know, as it said in big letters using ONLY the data in Fig 2.1
    ****, what was this for?
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    (Original post by skatealexia)
    So, whats the grade boundary gonna be?
    low! hopefully, probably between 42-46 for an A

    although im just guessing completely
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    fore the resp. equation. I said that there are many stages in resp. And also, water is explicitly made in respiration. Is this correct? :
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    (Original post by BHAM!)
    Is urine instead of urea okay for something that is excreted? =S
    This is what I put, technically it is urine being excreted, urea is just a main component of it (but not the only one)
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    this paper was worse than june in terms of wishy washiness, total and utter crap half the time, why the hell is it always like that, its got something to do with the fact that we are the first ones to do it, they had the whole spec to ask us about, someone needs to examine this examiners pronto
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    I hope so
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    Theres too many different answers for this paper. What people wrote varies alot. With most exams everyone tends to give the same answers but with this one there so much! And none of them sound wrong either really lol
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    (Original post by maniacsandwichbar)
    That's why the colour of the indicator becomes orange-yellow, as more respiration is taking place so more CO2 is produced which dissolves in solution to form carbonic acid which is acidic.
    CO2 dissolves in water to form an acidic solution, not hydrogen carbonate.
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    (Original post by Kulpio)
    I agree ! Sick of pompous know-it-alls :rolleyes:
    I know! Grrrr!!! I'm hoping to scrape a B in Biology
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    (Original post by InvoluntarySlacker)
    Don't get ahead of yourself there. I don't see any other guys declaring their love for you in marriage. Now, where shall we consummate?
    LOOOOL omg!



    In a bed full of money equating to 1 million pounds?
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    (Original post by Summerdays)
    fore the resp. equation. I said that there are many stages in resp. And also, water is explicitly made in respiration. Is this correct? :
    I put that more than one glucose molecule is being respired so the stuff in the equation is happening on a much larger scale ie. a greater number of times at the same time
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    (Original post by george54)
    CO2 dissolves in water to form an acidic solution, not hydrogen carbonate.
    Hmm 6kills with a predator o_O I need to get 5kills with 2 to get that emblem ug
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    (Original post by george54)
    CO2 dissolves in water to form an acidic solution, not hydrogen carbonate.
    Actually, that's what I was suspicious of. The equation is H20 + CO2 = Carbonic Acid, so where did the water come from if the indicator was in Hydrogen Carbonate?
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    (Original post by george54)
    CO2 dissolves in water to form an acidic solution, not hydrogen carbonate.
    It dissolves in solution, not just water.
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    (Original post by maniacsandwichbar)
    That's why the colour of the indicator becomes orange-yellow, as more respiration is taking place so more CO2 is produced which dissolves in solution to form carbonic acid which is acidic.
    That makes a lot of sense. I though along the same lines but wasnt it one where the band was red and the ph solution was red? How does that work? Plus its water it dissolves in not Hydrogen carbonate. But i guess if its a solution it has water.

    If it was 3 marks I reckon 1 mark for be to realise that it reflects green.
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    (Original post by Remarqable M)
    ok the question where it asks you why the color of ph is yellow
    i wrote the disc were photosynthesising, which means non-cyclic phosphorylation took place which produces hydrogen ions
    which raised the ph to yellow.
    In all the mark schemes i've seen you need to say photophosphorylation... You probably still got the 3(?) marks for explaining it though.
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    (Original post by Remarqable M)
    i wrote that that it is clear in the table that myelinated produce faster speed of conduction. For example, when the diameter is increased from 4micrometer to 10micrometer the speed of conduction increases by 5m/s

    for the next question i said the diameter of a neurone has no effect on the speed of conduction. For example for the non-meyinated neurone with 1000micrometer diamter the speed of conduction was just ....can't remember but i said something like that
    i wrote that that it is clear in the table that myelinated produce faster speed of conduction. For example, when the diameter is increased from 4micrometer to 10micrometer the speed of conduction increases by 5m/s i wrote the same..
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    (Original post by woozeybear)
    I put hormones - no idea if it was right, first thing that came into my head tbh..
    I put insulin...but i guess thats a hormone
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    Oh **** everyone is doing medicine here, i want to do geology and my geography exam is tomorrow yet ive wasted 2 hours talking here damnit xD
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    (Original post by Summerdays)
    Correct. But I didn't put that because I read the colour wrong :o:
    as far as I remember, in green light, indicator soultion was yellow-orange, so there was no pH change
 
 
 
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