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OCR F211/F212 AS Biology Retake 2016 Watch

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    (Original post by Jennie4444)
    inhibits lipase which breaks down fats
    i Worte they cause hydrolysis to occur to break the ester bonds bonds down would that be wrong
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    (Original post by Tinksy)
    Omg yes same!! Thank god! I spent ages trying to figure them out! I put concentration, low genetic variation, and EIA would not approve it, and then reduce cellular activity of enzymes, making activation energy harder to reach for last one.
    Did the statment not say that SID was high and the habitat was stable so the authority are likely to accept the planning permission?
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    (Original post by Jennie4444)
    inhibits lipase which breaks down fats
    I out that dirt and cro
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    (Original post by Tinksy)
    What did people put for the last questions when they asked you to correct their statements???
    One was about amount of substrate and what a better word for that was
    The second was like productivity of animals
    The other was like freezing and explain that
    And um there was one about biodiversity and planning permission
    Can't recall the substrate one?

    But I said that inbreeding doesn't directly cause mutations but that selective breeding reduces the gene pool which is why genetic diseases appear more frequently... they are also more susceptible to outside disease.

    I also said freezing removes water and microorganisms require water to survive so essentially they die and decomposition can't occur so food is preserved.

    For the EIA one I said that a high biodiversity should prevent planning from being granted but someone else said that they talked about how EIA takes into consideration endangered species whereas Simpson's index doesn't? You can read up the thread for that one!
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    (Original post by 09ekennedy)
    Did the statment not say that SID was high and the habitat was stable so the authority are likely to accept the planning permission?
    But didn't we have to identify something that was incorrect in the statement? Maybe I interpreted it wrong....
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    (Original post by marie0803)
    Is it true that grade boundaries are going to be high because everyone doing the exam is a resitter? Just some rumours about that were circulating...
    I hope not. That would be terrible


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    (Original post by AminahBBQ)
    I got 0.14

    (0.56 x 250) / 1000 = 0.14
    would I get method marks?

    I'd think you'd probably get a method mark for multiplying by 250 and dividing by 1000, or an Error Carried Forward mark
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    (Original post by marie0803)
    But didn't we have to identify something that was incorrect in the statement? Maybe I interpreted it wrong....
    no youor right i just wanted to clarify the statement :-)
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    (Original post by 09ekennedy)
    Did the statment not say that SID was high and the habitat was stable so the authority are likely to accept the planning permission?
    Yes I believe so! I thought if S.I was high this means high biodiversity so EIA wouldn't let them build on a place with high biodiversity?
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    What did everyone put for glycogen question??? I mentioned...
    Compact so energy dense
    Branched for enzymes to attach - breaks off glucose for respiration
    insoluble so doesn't affect water potential
    Granular
    A-glucose subunits and 1-4 glycosidic bonds and 9% 1-6 bonds

    What else was there to mention??
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    1-4, 1-6 Amylopectin?
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    (Original post by Tinksy)
    What did everyone put for glycogen question??? I mentioned...
    Compact so energy dense
    Branched for enzymes to attach - breaks off glucose for respiration
    insoluble so doesn't affect water potential
    Granular
    A-glucose subunits and 1-4 glycosidic bonds and 9% 1-6 bonds

    What else was there to mention??
    thats what i put, what did you ut for why the lilly whatever its name was isnt no longer found in its original habitat
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    (Original post by Ladybirdm)
    1-4, 1-6 Amylopectin?
    that a component of starch not glycogen?
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    (Original post by Tinksy)
    What did everyone put for glycogen question??? I mentioned...
    Compact so energy dense
    Branched for enzymes to attach - breaks off glucose for respiration
    insoluble so doesn't affect water potential
    Granular
    A-glucose subunits and 1-4 glycosidic bonds and 9% 1-6 bonds

    What else was there to mention??
    I think you've covered it but I just elaborated a little:
    Branches mean it can be broken down quickly and efficiently
    Small and compact so it doesn't take up a lot of space = more space for even more glycogen
    Stores a lot of energy for its mass/size
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    (Original post by 09ekennedy)
    thats what i put, what did you ut for why the lilly whatever its name was isnt no longer found in its original habitat
    For that one I mentioned changed in Flora, Climate change, Change of temperature, change in mineral content/ nitrogen in the soil? And disease :/
    What did you put??
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    (Original post by 09ekennedy)
    that a component of starch not glycogen?
    Amylopectin and glycogen are both branched so contain 1,6 glycosidic bonds.

    Also, Glucose is an example of a carbohydrate. I believe starch is a carbohydrate?
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    (Original post by Tinksy)
    What did everyone put for glycogen question??? I mentioned...
    Compact so energy dense
    Branched for enzymes to attach - breaks off glucose for respiration
    insoluble so doesn't affect water potential
    Granular
    A-glucose subunits and 1-4 glycosidic bonds and 9% 1-6 bonds

    What else was there to mention??
    Glycogen is soluble though isn't it? It's amylose that is insoluble
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    (Original post by Tinksy)
    For that one I mentioned changed in Flora, Climate change, Change of temperature, change in mineral content/ nitrogen in the soil? And disease :/
    What did you put??
    climate change and the increase in temp changes environmental conditions and therefore the lilly is unable to adapt to new environemental coniditons?...
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    (Original post by Tinksy)
    For that one I mentioned changed in Flora, Climate change, Change of temperature, change in mineral content/ nitrogen in the soil? :/
    What did you put??
    I wrote overgrazing from herbivores and pests/disease for the 2 marks. Would have put something about breeding in the wild is hard if individuals are far away etc or if numbers are low for a 3rd. Think your points work as well!
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    (Original post by LaurenPF)
    Amylopectin and glycogen are both branched so contain 1,6 glycosidic bonds.

    Also, Glucose is an example of a carbohydrate. I believe starch is a carbohydrate?
    but didnt the question refer to strucutre of glycogen and why its useful in animals?
 
 
 
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