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    (Original post by mynameisntbobk)
    same, hoping for a good paper, but I'm way more ready for it now than I was a week ago, so it's just making sure I actually answer the questions
    yes me too, this time last week i was getting 30 marks on my papers
    can i check one thing with you regarding against and for stem cells: this is what i know,.is there anything else i should know?
    for:
    -the stem cells could potentially improve and save lives and treat diseases such as type 1 diabetes.
    -the spare embryos are discarded anyway
    -the embryos should not be considered human at an early stage
    -embroynic stem cells are.more flexible than adult stem cells
    against:
    -embryos are potentially human
    -they have right to life after conception
    -ethical and religious objections
    -could lead to designer babies
    is their anything else fo against and for?
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    (Original post by CoolRunner)
    I was told by my teacher to learn it, so play it safe

    Mmnn, okay, thanks. I'll have a look at it, on A's notes.
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    (Original post by CoolRunner)
    Btw, what is 60 ums in terms of a grade (that's what i need to get to scrape an A overall (240 ums) for the next exam).
    D/C :/ its 50% so probably a D

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    (Original post by CoolRunner)
    Btw, what is 60 ums in terms of a grade (that's what i need to get to scrape an A overall (240 ums) for the next exam).
    Same!
    it's a D. wooo
    But looking at the ways the grade bondaries are going, it's going to be around 50's+ (raw) But thats still low, can lose around 20+marks. Not that we intend to!
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    What are the regulatory authorities relating to human embryo research???
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    (Original post by Rubyturner94)
    yes me too, this time last week i was getting 30 marks on my papers
    can i check one thing with you regarding against and for stem cells: this is what i know,.is there anything else i should know?
    for:
    -the stem cells could potentially improve and save lives and treat diseases such as type 1 diabetes.
    -the spare embryos are discarded anyway
    -the embryos should not be considered human at an early stage
    -embroynic stem cells are.more flexible than adult stem cells
    against:
    -embryos are potentially human
    -they have right to life after conception
    -ethical and religious objections
    -could lead to designer babies
    is their anything else fo against and for?
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    for against, maybe embryos can't give consent?
    and another against is the risk of cloning
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    How can stem cells be damaging to human?
    Apart from rejection and infection?
    Also, species richness- what are the two key points... So the number of species in an area?
    And aseptic aseptic aseptic--- I kept on leaving that out in the totipotency and antimicrobial properties practicals...D:
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    What does an Amyloplast actually do, store energy ?:confused:

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    (Original post by anonymouspie227)
    How can stem cells be damaging to human?
    Apart from rejection and infection?
    Also, species richness- what are the two key points... So the number of species in an area?
    And aseptic aseptic aseptic--- I kept on leaving that out in the totipotency and antimicrobial properties!
    there's mutations/cancer development

    Number of different species in an area
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    (Original post by mynameisntbobk)
    for against, maybe embryos can't give consent?
    and another against is the risk of cloning
    thanks Bobk
    ps: its ironic how a few of us on here call you Bobk yet in your TSR name it says mynameisntbobK

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    (Original post by Branny101)
    What does an Amyloplast actually do, store energy ?:confused:

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    starch granules
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    (Original post by Rubyturner94)
    thanks Bobk
    ps: its ironic how a few of us on here call you Bobk yet in your TSR name it says mynameisntbobK

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    no problem

    haha I never mind tbh, only used the name to annoy my friend (who's nickname was Bob )
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    (Original post by mynameisntbobk)
    starch granules
    Yeah I know, but is its purpose for energy storage?

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    (Original post by mynameisntbobk)
    there's mutations/cancer development

    Number of different species in an area
    Thank you!
    How does that differ from species diversity?
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    what are aseptic conditions?
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    Hey guys! hope the revision is going well!

    I was doing the specimen paper and came across this question:

    explain how independent assortment leads to genetic variation?

    its only 2 marks so i was wondering what 2 points you would just make? plus does anyone have the mark scheme for the specimen paper?

    Thank youuuu
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    (Original post by The Assassin)
    Alright, after revising biology and taking notes to the point where I've almost become mentally unstable, the notes are done.


    These are all mark schemes either taken from Edexcel papers, ranging from 2001 all the way till 2013. Some topics were taken from other exam boards because there weren't questions in the (recent) past papers for Edexcel regarding them. Others were taken from mark schemes in books. Some may find this useless some helpful, but I hope you all make good use of these!

    Please note that whilst this should cover the majority of topics, it doesn't cover everything! There are some things that are mentioned in the official Edexcel textbook that I was unable to re-create in mark scheme form because I couldn't really find any - one of them is epistasis. Furthermore they don't cover HSW so you'll have to practice and revise from the official Edexcel book for that. Lastly, while I did include diagrams relevant to the topic not every single is included. Don't rely on this solely!

    Let me know if you guys want something important added...
    All i can say is... I wish i found this sooner!
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    (Original post by jooh_23)
    what are aseptic conditions?
    Its basically when you ensure that the experiment is conducted under sterile conditions so for the garlic and mint anti microbial properties it was basically to ensure that petri dishes containing the micro organisms were not completely opened to prevent contamination.
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    (Original post by Branny101)
    Yeah I know, but is its purpose for energy storage?

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    the amyloplast stores starch granules. The starch will probably be hydrolised when needed so the glucose can be used for aerobic respiration

    (Original post by anonymouspie227)
    Thank you!
    How does that differ from species diversity?
    It doesn't really.. although it's the total number of species represented by a collection of individuals

    (Original post by jooh_23)
    what are aseptic conditions?
    well for the antimicrobial experiment, it would be the whole working next to a naked flame..

    basically, working in a sterile manner
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    (Original post by jooh_23)
    what are aseptic conditions?
    where the procedure is done under sterile conditions??
 
 
 
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