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    Predictions guyss
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    (Original post by Mbrown96)
    Orite m8
    u wot m8, 1v1 irl
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    (Original post by Nadwuar)
    Predictions guyss
    This is what i've heard people have been saying and what i think hasn't come up for a while:

    galapagos,
    something out of the topic about pcr/genome sequencing/insulin/rice etc,
    something out of the pages 232, 236-237 (muscles topic),
    brain
    shedding leaves (pg 223)
    how auxins stimulate shoot growth (pg 222)
    meiosis
    apoptosis
    epistasis
    something out of the topic animal behaviors (social behavior in primates i think)
    Chi squared
    Nitrogen cycle
    Aseptic technques/Asepsis - that table on the bottom of pg 163

    but anything could come up even repeated topics
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    (Original post by Diamond Crafter)
    Aye, it has been a long one. Although I'm sure we'll all get through to the end if the countless number of previous year 13s before us could.
    haha yeah there's hope if others have done it before hand and re stocked for caffeine so should be able to work now
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    (Original post by bakedbeans247)
    This is what i've heard people have been saying and what i think hasn't come up for a while:

    galapagos,
    something out of the topic about pcr/genome sequencing/insulin/rice etc,
    something out of the pages 232, 236-237 (muscles topic),
    brain
    shedding leaves (pg 223)
    how auxins stimulate shoot growth (pg 222)
    meiosis
    apoptosis
    epistasis
    something out of the topic animal behaviors (social behavior in primates i think)
    Chi squared
    Nitrogen cycle
    Aseptic technques/Asepsis - that table on the bottom of pg 163

    but anything could come up even repeated topics
    Thank you very much. As for the auxin part wouldn't that be the same topic as what came up last year or am I thinking of another paper
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    (Original post by domcandrews)
    Not even sure luck can save me anymore fml
    just need to get caffeinated then can concentrate
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    Does anyone know a past paper which has a recessive epistasis question in it?
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    (Original post by bakedbeans247)
    This is what i've heard people have been saying and what i think hasn't come up for a while:

    galapagos,
    something out of the topic about pcr/genome sequencing/insulin/rice etc,
    something out of the pages 232, 236-237 (muscles topic),
    brain
    shedding leaves (pg 223)
    how auxins stimulate shoot growth (pg 222)
    meiosis
    apoptosis
    epistasis
    something out of the topic animal behaviors (social behavior in primates i think)
    Chi squared
    Nitrogen cycle
    Aseptic technques/Asepsis - that table on the bottom of pg 163

    but anything could come up even repeated topics
    I love you

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    anyone wanna go through nitrogen cycle and that stuff cannot do it
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    what's ammonification?


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    (Original post by ooxbridge)
    me too, I focused so much on chem f325 I totally neglected f215 );
    This is my last proper exam, so u have nothing to lilolose by doing an all nighter, aside from a place in uni
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    june 2010 question 2: b ii

    can anyone please help with this one as i am not being able to understand even after looking at the mark scheme.
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    It's how nitrogen is fixed to ammonium or how plants die or animals excrete faeces to release ammonium (Nitrogen Cycle)
    (Original post by HeyThereHarry)
    what's ammonification?

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    For intraspecific competition what example should I use?
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    Gray and Red Squirrels is a good one
    (Original post by Nadwuar)
    For intraspecific competition what example should I use?
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    (Original post by flowerbud)
    Can anyone explain to me Chi-squared? I understand how to use the equation etc.. but the hypothesis confuses me. If X^2 is less than 0.05 (5%) do you accept or reject the null hypothesis, and what does this mean in terms of your experimental data being down to chance or being significant....

    it confuses me so much!!!
    In the column of p=0.05, you have a number of values. You're only interested in the value which relates to the number of classes/degrees of freedom which the question is concerned with

    Classes are basically the different number of phenotypes. So let's say a question has yellow and round seed phenotype and a yellow and wrinkled seed phenotype. Here, we have two classes (and 1 degree of freedom). So now just go to the table and find the p=0.05 value (the critical value) for 2 classes. If your chi-squared value is lower than this critical value, you accept the null hypothesis - that is that the biological theory is consistent with the experiment, and that any difference is due to chance

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    (Original post by peanutcracker20)
    just need to get caffeinated then can concentrate
    Yes very true! Running on about 4 hours sleep over the past 2 days, gonna have to be 0 hours sleep tonight, to try and get some marks tomorrow
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    (Original post by Syystole)
    Gray and Red Squirrels is a good one
    Yeah I use that for inter but if the question asks for different examples of both type of competition what should I use for intra, I don't want to repeat something I would've already mentioned if you know what I mean
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    (Original post by peanutcracker20)
    can anyone teach me muscle contractions its so confusing and its bound to come up
    Ok

    - myosin head binds to actin filament
    - myosin head bends
    - thin filament slides and overlaps with the thick filament
    - atp binds to myosin head
    - myosin head moves back in place

    Das it bro. Simples

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    (Original post by Mousyy)
    Out of curiosity cause I'm in the same position as you rn (i have done some past papers tho) are you making notes or jist going through the book I've literally lost all faith in this exam

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    Read through some notes and making revision cards on anything I know I won't be able to wing it -basically genomes and electrophoresis. Will do a past paper after then do revision cards on plant hormones followed by june 14 paper. If I have time I might do more but at this stage I just want this exam over, didn't think I'd hate biology this much.
 
 
 
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