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Edexcel 6BIO7/01 (International Unit 3B) ~ 7th May 2013 ~ AS Biology Watch

  • View Poll Results: Which practical do you expect? ~Biology unit 3 May 7~
    Daphnia (effect of caffeine on heart beat rate)
    13.51%
    Test for vitamin C
    16.22%
    Membrane permeability (Beetroot)
    24.32%
    Enzyme concentration
    16.22%
    Mitosis (Onion root cell)
    75.68%
    Tissue culture
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    Tensile strength of plant fibres
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    Mineral deficiencies
    10.81%
    Antimicrobial properties of plants
    21.62%

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    (Original post by kaju)
    hey any 1 f u al know da liink to physics 3b dicussion
    http://www.thestudentroom.co.uk/show....php?t=2316839
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    (Original post by kevsamuel)
    Pretty annoyed about the stupid mistakes I made. I know I dropped about 6 marks :/
    Me too! I wouldn't be upset if they were decent mistakes
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    Munchee I ll lose max 4 marks in q1 and max 8 marks in q2....is there some chance of getting an A??????
    and will my bar chart get 1-2 marks?
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    (Original post by CelloForLife)
    Me too! I wouldn't be upset if they were decent mistakes
    Yerp same :/ oh well.. Did you do the Unit 3B Chemistry paper? If so how did you find it? I thought it was pretty easy and don't think I made many mistakes, hopefully got an A!
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    (Original post by kaju)
    dont worry dude whr r u frm r u doin phsic exm 2mrw normally at wht tym do u al hav exms
    Kaju you asked me for the physics January 2013 here you go
    Attached Images
  1. File Type: pdf 6PH07_01_que_20130108.pdf (421.8 KB, 90 views)
  2. File Type: pdf 6PH07_01_rms_20130307.pdf (210.8 KB, 97 views)
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    (Original post by kevsamuel)
    Yerp same :/ oh well.. Did you do the Unit 3B Chemistry paper? If so how did you find it? I thought it was pretty easy and don't think I made many mistakes, hopefully got an A!
    Yes I heard it was a quite easy paper all my friends did great! & good job
    I don't take chemistry this year, I'm taking it next year!
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    (Original post by StUdEnTIGCSE)
    Yes, but the previous papers were not that boring
    Yeap.. How'd you do ?
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    I put D for the first one:/ why is it c?




    (Original post by liowwc)
    2. 4 cells
    4. sister chromatids to be exact
    8. around 1.46mm i think
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    Hey raves like I mentioned before just look at this diagramName:  ImageUploadedByStudent Room1368068812.103268.jpg
Views: 88
Size:  71.4 KB


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    (Original post by kevsamuel)
    Yerp same :/ oh well.. Did you do the Unit 3B Chemistry paper? If so how did you find it? I thought it was pretty easy and don't think I made many mistakes, hopefully got an A!
    What was the formula of the first unknown compound?
    And had we to take the mass of zinc into consideration in the enthalpy question because they told to assume that the specific heat capacity of the "mixture" was 4~??

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    (Original post by StUdEnTIGCSE)
    What was the formula of the first unknown compound?
    And had we to take the mass of zinc into consideration in the enthalpy question because they told to assume that the specific heat capacity of the "mixture" was 4~??

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    KI

    No need to take mass of zn into consideration. Only mass of CuSO4 solution.

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    (Original post by Relaxedexams)
    KI

    No need to take mass of zn into consideration. Only mass of CuSO4 solution.

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    Yes but my brother told that they specifically mentioned the specific hear capacity of "mixture". But I think its ridiculous to take the mass of Zn into consideration.

    But for KI what about the sulphate present?


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    (Original post by Daniel Atieh)
    Munchee I ll lose max 4 marks in q1 and max 8 marks in q2....is there some chance of getting an A??????
    and will my bar chart get 1-2 marks?
    Well I think you would get a couple of marks for your bar chart...alot of my friends actually drew bar graphs too.

    I don't know about the great boundaries...you and I are pretty much in the same boat. Wasn't it last year when the grade boundary for an A was 36 and above.

    Well it seems a lot of us made some silly mistakes...chances are you'll probably get an A or high B grade. IF the marks you calculated are correct. But don't take my word for it.
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    (Original post by StUdEnTIGCSE)
    Yes but my brother told that they specifically mentioned the specific hear capacity of "mixture". But I think its ridiculous to take the mass of Zn into consideration.

    But for KI what about the sulphate present?


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    Sulfate was absent.

    You only take mass of solution. Not the Zn. Im pretty sure.

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    any one got the exam paper, please I want to check it.
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    (Original post by StUdEnTIGCSE)
    Yes but my brother told that they specifically mentioned the specific hear capacity of "mixture". But I think its ridiculous to take the mass of Zn into consideration.

    But for KI what about the sulphate present?


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    Lol, you probably did the same mistake that I did. I thought that sulphate is present, I didn't read the question well, and I wrote (k3ISO4) for the formula so I lost 2 marks for misreading the question , even though I had time to revise my paper, but I didn't revise that part specifically !


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    (Original post by KhawlaM)
    Lol, you probably did the same mistake that I did. I thought that sulphate is present, I didn't read the question well, and I wrote (k3ISO4) for the formula so I lost 2 marks for misreading the question , even though I had time to revise my paper, but I didn't revise that part specifically !


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    Then KI is correct? What was the sulfate about then?

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    (Original post by Relaxedexams)
    Sulfate was absent.

    You only take mass of solution. Not the Zn. Im pretty sure.

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    The inference was sulfate was absent or present? Either way I'll lose one mark and gain one mark

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    (Original post by StUdEnTIGCSE)
    Then KI is correct? What was the sulfate about then?

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    The inference was : sulfate is absent.


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    (Original post by KhawlaM)
    The inference was : sulfate is absent.


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    OK. :dontknow:
    So the observation should have been no white precipitate formed.
    Will they mark KI wrong if I had written white precipitate formed?

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