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AQA BIOL5 Biology Unit 5 Exam - 22nd June 2011 watch

  • View Poll Results: Are you resitting this unit?
    YES!
    12.91%
    NO!
    87.09%

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    (Original post by Aysha92)
    Ribose as it's mRNA
    haha yeah i realised thanks anyway

    in my essay i wrote about:
    -carbon
    -nitrogen
    -circulatory system
    -cell cycle(mitosis)
    -krebs
    -calvin
    -PCR

    and in my plan i wrote about hormones like menstrul cycle but forgot to write tht in the essay, u rekon ill get full 3/3? thanks
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    The percentage question clearly said only for nervous stimulation.....so it has to be 100 0 0. But i am not really sure!!! Apart from that thepaper was quite good....with some tricky questions(had to be there). The essay topics were a gift ....I did the DNA one and wrote like 5 pages on all the DNA stuff in A2 and some from unit 2.The grade boundries will be 60 to 70 % for an A I think. But seeing that some people found it difficult they could be lower.
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    Wrong it says what percentage of gastric acid is from nervous stimulation at that point, thus 80%.
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    (Original post by goodboy4444)
    The percentage question clearly said only for nervous stimulation.....so it has to be 100 0 0. But i am not really sure!!! Apart from that thepaper was quite good....with some tricky questions(had to be there). The essay topics were a gift ....I did the DNA one and wrote like 5 pages on all the DNA stuff in A2 and some from unit 2.The grade boundries will be 60 to 70 % for an A I think. But seeing that some people found it difficult they could be lower.
    I put 100 0 0.. it makes sense...
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    What did people put for the question that asked describe how the data shows that the cells produced or toti-potent?
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    (Original post by ApplePi)
    I put this too.

    The protein can be broken down (by hydrolysis) and the constituent amino acids can be recombined in a different order to give a new protein.
    I put that. Only i put monosaccharides and polysaccharides..... :facepalm:
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    (Original post by goodboy4444)
    The percentage question clearly said only for nervous stimulation.....so it has to be 100 0 0. But i am not really sure!!! Apart from that thepaper was quite good....with some tricky questions(had to be there). The essay topics were a gift ....I did the DNA one and wrote like 5 pages on all the DNA stuff in A2 and some from unit 2.The grade boundries will be 60 to 70 % for an A I think. But seeing that some people found it difficult they could be lower.
    no it was definitely the total amount, so it is 80%
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    (Original post by lpassby)
    Okay, to clear up the percentage question once and for all, here is the graph we were given:



    The table asked what % of the gastric juice was produced by nervous stimulation.

    At 1 hour after digestion, nervous is at 8 units and hormonal is at 2, therefore nervous represents 8/10 = 80%

    At 2 hours after digestion, nervous stimulation has dropped to 0, only hormonal stimulation is occurring so the percentage is 0%

    3 hours gives the same answer as 2 hours.
    It asked about *nervous stimulation* not anything to do with hormonal
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    (Original post by lpassby)
    Okay, to clear up the percentage question once and for all, here is the graph we were given:



    The table asked what % of the gastric juice was produced by nervous stimulation.

    At 1 hour after digestion, nervous is at 8 units and hormonal is at 2, therefore nervous represents 8/10 = 80%

    At 2 hours after digestion, nervous stimulation has dropped to 0, only hormonal stimulation is occurring so the percentage is 0%

    3 hours gives the same answer as 2 hours.
    Sh%t! I got this wrong! I did 100,0,0 - how many marks was it?
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    (Original post by goodboy4444)
    The percentage question clearly said only for nervous stimulation.....so it has to be 100 0 0. But i am not really sure!!! Apart from that thepaper was quite good....with some tricky questions(had to be there). The essay topics were a gift ....I did the DNA one and wrote like 5 pages on all the DNA stuff in A2 and some from unit 2.The grade boundries will be 60 to 70 % for an A I think. But seeing that some people found it difficult they could be lower.
    It was 80 0 0, learn maths...
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    (Original post by Tericon)
    I put that. Only i put monosaccharides and polysaccharides..... :facepalm:
    Ohhhh dear... The pressure of an exam worth 60% of A2 makes us do silly things
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    (Original post by VinnDawggg)
    It asked about *nervous stimulation* not anything to do with hormonal
    it was total amount of hormone produced at a specific time of nervous stimulation
    correct answer is
    80 0 0
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    (Original post by VinnDawggg)
    It asked about *nervous stimulation* not anything to do with hormonal
    Yes, it asked about nervous stimulation and the total volume of gastric juice produced - hormonal stimulation contributed to gastric juice production at 1 hr so had to be taken into consideration.

    It was only worth 1 mark if I remember correctly, 2 max.
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    (Original post by janet9)
    Sh%t! I got this wrong! I did 100,0,0 - how many marks was it?
    only 1 mark!
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    (Original post by gorillaz121)
    It was 80 0 0, learn maths...
    Clam down lol!!! Untill someone shows me the question paper and I read the question again(I might be wrong) I will stick with my point..
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    for the two questions on histamine and hormone,.......what did people put?
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    The best bit about that exam is that its over I will never ever have to pretend to care about flies growing up or pigs getting pregnant again. .
    So long aqa biology!



    BUT If I fail and have to retake. . .fml!
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    Hey i'm reli worried I messed up my essay and wanted to know what people think - btw you can be brutally honest.

    I chose the DNA and its uses in science and technology and talked about;

    1) Classification and using DNA hybridisation to find how similar or different organisms are
    2) Then talked about DNA fingerprinting and using polymerase chain reaction
    3) then i talked about meiosis and how understanding how variation is important is used for conservation (okay i know this is a stretch).


    and thats about it
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    What do you think the boundaries will be for all of the grades? cause i really need a C bu most people are just putting what they think the boundary for an A is? I feel a bit stupid haha
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    do you get marks for the plan? didn't really do one coz i'd done the essay before..
 
 
 
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