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    (Original post by wednesburywench)
    hmmm so was the answer open or closed? guess we wont know. if it was on about voltage sensitive then sureley they r both closed.
    yes
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    I take it that action potential question was in both Unit 6 and 7 then? I put that they were both closed during resting potential. Looking at a couple of past papers last night, they make a point of emphasising that the sodium and potassium ions move by diffusion (underlined in mark scheme) during the resting potential so I put they were both closed.
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    (Original post by Joey12)
    As above lol, meh im not a teacher im just telling u wot it says in me book
    what book is this, its sounds wrong.
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    argh lets just leave it, was a horrid paper anyways there goes university
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    (Original post by Joey12)
    As above lol, meh im not a teacher im just telling u wot it says in me book

    hehehe it k lol. Im still confsed. Dn't know who is right and who is wrong
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    (Original post by Fluent in Lies)
    So the NA+ gates aren't actually open at rest.
    Well according to the book a few are, hence the point of the ATP pump to expel them against conc gradient and keep potential negative but in question on exam when it said are Na+ open at rest i said 'no' because im sure ive seen a similar question in past paper which said they were closed, and i thought maybe it was a trick question.
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    so u actually are arguing against what you wrote in the exam? strange....do you normally not trust your judgement in exams!
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    (Original post by Fluent in Lies)
    what book is this, its sounds wrong.
    Biology to Advanced Level 'Toole and Toole'....
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    Lol im not arguing against my judgement, i just remember a similar past paper question and i think coz only a few are open, they just take it as being closed...but anyway the quesion asked earlier was bout K+ channels thats all i was gettin at...meh wots done is done anyway....
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    Anyway, what did everyone put bout role of RER in the lipid question?
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    (Original post by Heidi)
    hehehe it k lol. Im still confsed. Dn't know who is right and who is wrong
    actually now i do know who is right lol, its me.
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    it is.....taken from my revision book here written by the examiner.....

    These ions are able to diffuse freely though ion channals in the neurone. The imbalance of ions is maintained by sodium potassium pumps. Then it says action potential is formed when sodium gates open........so therefore the gates must be closed, its just ion channels which are open NOT the gates, so i think both closed is correct.
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    i put has ribosomes = site of protein syn'

    What did people put for the link between xylem in roots and xylem in leaves?
    and what did you lot put as why the humidty is constant?

    Can anyone remember their unit 6 calculations?

    What did you write about ADH?
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    synthesises the protiens on the ribosome which surrounds the triglycerides.
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    THERE WAS A KEY! WHAT DID IT SAY?

    *slams head*
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    (Original post by Joey12)
    Anyway, what did everyone put bout role of RER in the lipid question?
    i put down that the rough ER contains ribosomes and that protein synthesis occurs in the ribosomes.
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    (Original post by Joey12)
    Anyway, what did everyone put bout role of RER in the lipid question?
    For the chylomicron question? I put that it was formed using proteins and these are synthesised on ribosomes which are on the RER.
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    Lol, well i know K+ are open so im not arguing any more
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    i got 0.0105 or sumat and 62.3 or sixty somat anyways. Humidity constant because this would affect the rate of transpiration due to reduction in concentration gradient. ADh and the leaf one i put sumat silly, the ADH most of wat i wrote was in the passage ie-receptors bind, causes aqauaporons to bind etc. i hate you mr examiner
 
 
 
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