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    I did not like that paper! Too many suggest questions :/

    Anyway my answers were:
    Immediately after expiration was A
    Mitosis, meiosis, mitosis;;;; meiosis, meiosis
    13.835(?) for chi squared and 3 for the degrees of freedom (i cant believe it came up when everyone was literally just talking about if it's in the spec or not) and my explanation was that there is a significant difference between observed and expected.

    Chitin? Said it keeps the trachea open and provides support and prevents collapsing. And i totally guessed the one after but i said less air will get to the tracheoles and therefore cells so less respiration for those cells?

    Use a pH meter for a less subjective method of measuring ph (idk if this is correct no one seems to have put the same) and to do the experiment between 25-35 (although 30-35 makes more sense) with smaller intervals.

    3140% in the last percentage question
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    (Original post by ronnydandam)
    alright salt machine
    Ouch
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    (Original post by DaVinciGirl)
    What did you guys suggest what other problem the honey bee has?

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    I put that there are obstruction in the tracheae and tracheoles, so ventilation is less efficient ergo gaseous exchange is less efficient.
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    (Original post by aliyah99)
    But I thought it could be in G0 as well because it was G0/G1 so I put it was a specialised cell or a senescent cell?
    I put G0, on the internet it's say it is part of interphase. But is it a phase?

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    (Original post by brodingoson)
    Yeah, that's an honest mistake but in the question it said to use how many rows
    It did?! Damn
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    (Original post by Jitesh)
    The question about agar, did you write it was extracellular?
    Yes! Extracellular action as some starch was hydrolysed further out from where the fungi was present.
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    Yeah pretty sure G0 is a phase
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    (Original post by kaykaayy)
    It did?! Damn
    I thought it said how many categories

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    (Original post by Logic4Life)
    The letter pointing to sperm and egg was meiosis right? The spores was mitosis
    Yeah i think so
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    what did u guys put for why the pH wasnt controlled and why they used a white spotting tile?
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    (Original post by DaVinciGirl)
    I thought it said how many categories

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    Yeh it did, it said somthing about rows earlier in the Q.
    Did u get 4 so the DOF was 4-1=3
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    (Original post by DaVinciGirl)
    I put G0, on the internet it's say it is part of interphase. But is it a phase?

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    G0 phase is a phase for undifferentiated cells and cells with irreparable DNA due to mutations enter (so they don't replicate their DNA during S phase and are stuck in G0 until they die)
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    (Original post by DaVinciGirl)
    I put G0, on the internet it's say it is part of interphase. But is it a phase?

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    How did everyone answer the 6marker on enzymes? It threw me off when it talked about the two mechanisms but the question was about temperature so I wasn't sure but I did not talk about induced fit and just went on to mention how temperature affected enzymes ;_;
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    (Original post by Desouza123)
    what did u guys put for why the pH wasnt controlled and why they used a white spotting tile?
    same reason you use it for a titration, see colour change clearly
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    (Original post by Desouza123)
    what did u guys put for why the pH wasnt controlled and why they used a white spotting tile?
    I put because the white tile will show a higher contrast so you can more easily detect the colour change and for the pH one I put because the pH changed during the experiment. But i think that for the pH one you should've put something like how the pH change is needed to measure the enzyme activity but then again it was only 1 mark (or 2?).
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    (Original post by Desouza123)
    what did u guys put for why the pH wasnt controlled and why they used a white spotting tile?
    You don't control the pH as a change in the pH is the basis for the independent variable (i.e. as the lipid is hydrolysed by lipase, fatty acids are included in the product which lowers the pH).

    As for the spotting tile, not a clue.
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    What was the answer for the question that asked for the proof that it was resistant before meeting the penicillin or something like that
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    What did people say for which cell spent longest dividing?
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    unofficial markscheme anyone??
 
 
 
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