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Edexcel Biology IGCSE 2B Unofficial Mark Scheme 10th June 2016 Watch

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    2c asked about how vaccination would help the fish grow not the process of vaccination. The fish would have more proteins that can be used to grow more muscle tissue as proteins are no longer being used to repair infected tissue.
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    (Original post by popsie2000)
    I can't remember which question but one about genetic diagrams, another about blood clots and one about the placenta with the deers
    Yeah one was about the pattern of gestation, one was which deer. I think that was the penultimate question, this had another question on the role of the placenta. The genetic diagram said which one was homozygous recessive and which was homozygous dominant.
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    (Original post by conradliebers)
    You are right as well as me, I thought there was something wrong with it. Other people said it was 73.2 but it was 72.3 so it was 28.92 hence 28.9. Thanks.
    thanks god....
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    (Original post by Abodee1)
    why do i remember getting 28.9?
    Yeah i got the same answer, but when i do it now, i get a different the 29.2. Well i showed the working so i should hopefully get the mark!!
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    (Original post by conradliebers)
    You are right as well as me, I thought there was something wrong with it. Other people said it was 73.2 but it was 72.3 so it was 28.92 hence 28.9. Thanks.
    wait so the answer is 28.92? I remember getting this answer but im not sure....
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    the paper was defintely easier than the 1b.There is still hope for the A*.
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    I think it was iris not retina for the part b of the last one
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    Im so frustrtaed. ok so first i put pollination for 1.b then in the last seconds i changed it to fertilization, do u think it wil still get marked correct??
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    (Original post by Mirror123)
    I think it was iris not retina for the part b of the last one
    No, the retinal cells are the light receptive cells that get stimulated.
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    (Original post by Nurne)
    2c asked about how vaccination would help the fish grow not the process of vaccination. The fish would have more proteins that can be used to grow more muscle tissue as proteins are no longer being used to repair infected tissue.
    Yeah, I just wrote the process for added detail.
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    (Original post by Mirror123)
    I think it was iris not retina for the part b of the last one
    i believe the rod and cone cells are in the retina and fovea, but im not sure
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    (Original post by rcmack)
    i believe the rod and cone cells are in the retina and fovea, but im not sure
    Yes but didnt the question ask for a muscle
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    For 3.d) can you say the amout of nutrients or the amount if water supplied?
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    (Original post by Canwave28)
    For 3.d) can you say the amout of nutrients or the amount if water supplied?
    i think they will allow water supplied, not sure about nutrients
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    (Original post by rcmack)
    i think they will allow water supplied, not sure about nutrients
    Mineral content/ soil type should be Ok
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    (Original post by Mirror123)
    I think it was iris not retina for the part b of the last one
    It's retina, i checked the book. I wrote iris too!!
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    What about the factors affecting time to digest? 1st question
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    (Original post by Mirror123)
    Mineral content/ soil type should be Ok
    i put original mass of plants, pretty sure this isnt an abiotic factor tho
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    (Original post by Canwave28)
    What about the factors affecting time to digest? 1st question
    i think it is temperature and pH for the digestive enzymes to have optimum conditions
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    Omg so for the homozygous recessive did people get 11 (all the ones who did not suffer from FH) and for homozygous dominant did people get 0? (because the first generation parents were only Dd and dd so it was impossible for a DD to be offspring)
 
 
 
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