AQA Biology AS New Spec - 26th May and 7th June

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    What did you guys write about the question why the scientists drew the conclusion, it was about HIV and natural selection.
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    (Original post by Namita Gurung)
    That's more detail than what I wrote. I panicked on it since I don't remember seeing it in the textbook or the specification.



    That's what I wrote as well. How many marks was it? It was only 1 right?
    think it was 1 or 2 and its not in the textbook at all i just checked sadly well hope we get it right
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    Wasn't the difference in the area of the zone disinfected?

    I worked out the area of a circle for each and worked out how many times it was greater by dividing the area of the circle values.

    gg 0 marks looool
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    (Original post by zigocarn)
    What did you guys write about the question why the scientists drew the conclusion, it was about HIV and natural selection.
    I was thinking natural selection takes place over a long period of time and HIV was recently discovered. I also put natural selection gets rid of non-beneficial genes for more favourable/desirable ones
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    (Original post by jamiechristie)
    Wasn't the difference in the area of the zone disinfected?

    I worked out the area of a circle for each and worked out how many times it was greater by dividing the area of the circle values.

    gg 0 marks looool
    Ugh I didn't think about calculating the area - I just did the diameter of D divided by the diameter of B.
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    (Original post by jamiechristie)
    I was thinking natural selection takes place over a long period of time and HIV was recently discovered. I also put natural selection gets rid of non-beneficial genes for more favourable/desirable ones
    Was it 2 marks?
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    (Original post by sgill23)
    I didn't like that paper, it started off well but just got worse. Am I the only one who thinks it?
    soo true although i liked the starch and cellulose at the end but then translocation hit me and i was like why
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    (Original post by Namita Gurung)
    Ugh I didn't think about calculating the area - I just did the diameter of D divided by the diameter of B.
    Don't worry, more than likely I've done it wrong. I am really **** at Biology

    (Original post by zigocarn)
    Was it 2 marks?
    2 marks ye
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    i got 4:1.2????
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    (Original post by Luchamb)
    Why did the sample need to be thin?
    i think so light could more easily pass through and it could b seen clearly
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    I crammed the translocation thing this morning as well :lol: Was so happy when it came up.
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    How many marks was the question about what cause the clear zone and also the question about why above 40% shouldn't be used?
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    (Original post by zigocarn)
    What did you guys write about the question why the scientists drew the conclusion, it was about HIV and natural selection.
    i basically said that their offspring may not have the mutation and that people rarely come in contact with hiv disease and so few die from ir
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    (Original post by LaurenLovesMaths)
    hopefully like 60% for an A probably not though
    last year was 66 or 68 so i think it will b around the same
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    What questions/topics came up in todays paper?
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    (Original post by alexriversxx)
    i basically said that their offspring may not have the mutation and that people rarely come in contact with hiv disease and so few die from ir
    kill meeeeee
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    How many marks was the question about FEV, precautions that should be taken?
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    What was the answer to the non smoker FEV reducing? I put something silly like the alveoli cells not being able to regenerate
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    (Original post by jamiechristie)
    kill meeeeee
    that was a complete guess tho aha
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    What did you guys write about why above 40% shouldn't be used?
 
 
 
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