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    (Original post by Whostolemycookie)
    I think they're talking about the generative nucleus when it undergoes mitosis it creates 2 nuclei and when it enters the ovule it fertilizes with the zygote and the other fertilizes with the other polar nuclei and then it becomes the endosperm

    I think
    Doesn't it fertilise with the gamete to produce a zygote ? :dontknow:

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    Can I get a free download link or read online SNAB revision guide?
    PLZ sumbody help me..
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    (Original post by Nowshin Khan)
    Can I get a free download link or read online SNAB revision guide?
    PLZ sumbody help me..
    SNAB student book or revision guide?
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    (Original post by billyfisher100)
    In transpiration (which is not even on the spec) water vapour diffuses out through stomata, because water evaporates in sponges mesophyll and guard cells. This causes water to be replaced through capillary action in xylem, then osmosis to the leaf cells. Water is drawn up through xylem through cohesion tension (which is also not on the spec).
    Transpiration isn't in the spec?! What about pathways through the root to the Xylem?

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    Guys does anyone know what core practicals may come up this time? ANTIMICROBIAL and PLANT deficiencies came up in Jan anyways.. suggestions?
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    Question: What is a benefit of using pluripotent stem cells rather then totipotent for the treatment of type 1 diabetes?
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    (Original post by billyfisher100)
    SNAB student book or revision guide?
    SNAB revision guide
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    (Original post by Whostolemycookie)
    Question: What is a benefit of using pluripotent stem cells rather then totipotent for the treatment of type 1 diabetes?
    Urrrr... Totipotent gives rise to all the cells but plruipotenet does give rise to all the cell types except extra-emryonic stem cells therefore it's limited to produce only specific cells like for treating type 1 diabtetes.

    ?? :curious:

    hELP
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    (Original post by Whostolemycookie)
    Question: What is a benefit of using pluripotent stem cells rather then totipotent for the treatment of type 1 diabetes?
    Can be taken from left over IVF embryos instead of having to produce new ones? Fused cells maybe? Dunno :dontknow:

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    Guys does anyone know what core practicals may come up this time? ANTIMICROBIAL and PLANT deficiencies came up in Jan anyways.. suggestions?

    HELP
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    (Original post by Branny101)
    Transpiration isn't in the spec?! What about pathways through the root to the Xylem?

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    http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20 Issue%204%20250510.pdf

    Read the spec and you'll find out that half the stuff in that bloody snab student book isn't even in the spec!!
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    (Original post by billyfisher100)
    http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20 Issue%204%20250510.pdf

    Read the spec and you'll find out that half the stuff in that bloody snab student book isn't even in the spec!!
    TRUE most of then are garbage.. or for extension.
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    (Original post by Jacksgap)
    Guys does anyone know what core practicals may come up this time? ANTIMICROBIAL and PLANT deficiencies came up in Jan anyways.. suggestions?

    HELP
    Root tip squash almost for sure
    Totipotency
    Actually describing ntimicrobial properties of plants.
    tensile strength

    There was so much practical and HSW emphasis in January that maybe a practical wont even come up
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    (Original post by Jacksgap)
    TRUE most of then are garbage.. or for extension.
    Or if edexcel decide to give us a nice little off-spec surprise as they often do...
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    (Original post by billyfisher100)
    http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20 Issue%204%20250510.pdf

    Read the spec and you'll find out that half the stuff in that bloody snab student book isn't even in the spec!!
    Its true, but are the pathways there?

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    (Original post by billyfisher100)
    http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20 Issue%204%20250510.pdf

    Read the spec and you'll find out that half the stuff in that bloody snab student book isn't even in the spec!!

    SNAB revision GUIDE plz???
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    is genetic screening in unit 2 (pls reply soon )
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    (Original post by wbrian)
    is genetic screening in unit 2 (pls reply soon )
    Nope
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    (Original post by billyfisher100)
    Nope
    thankss
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    (Original post by Nowshin Khan)
    SNAB revision GUIDE plz???
    Sorry I've no idea

    But to be honest I have one and its not even that good. I would recommend making your own printed notes if you have not done so already or readi material from class or summarising textbook notes. Read the spec as well and check you know all of the points.
 
 
 
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