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    Heyall

    I'm looking for past papers (and mark schemes if possible) of 'Unit 6 W2' alternative to practical Biology paper under the Edexcel board. If any one has them or knows where i can get them from please inform me

    Thank you
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    my teacher said that she has a feeling the planning might be on reaction time or redox indicators(TTC), im not completely sure though, but reading thru those experiments is always good.
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    (Original post by akunem86)
    my teacher said that she has a feeling the planning might be on reaction time or redox indicators(TTC), im not completely sure though, but reading thru those experiments is always good.
    it wouldnt be...those came up a couple of years ago.
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    you never know, it could turn up.

    I hate this W2 paper, it sucks!
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    which practicals do we have to know cuz theres loads in the text books
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    (Original post by janmasta j)
    which practicals do we have to know cuz theres loads in the text books
    Don't know if you will need these for W2 all but these are the ones you need to know for the A-Level as a whole.

    -Sugars (Quantitative estimation and benedict's solution)
    - Enzymes (temperature, pH, concentration, immobilised)
    - Cells (Use a light microsocope, root tip squash)
    - Gas Exchange (Insect in boiling tube, respirometer, vital capacity)
    - Transport (Water potentials, solute potential, epidermal peel to see stomata)
    - Random -Meiosis in pollen cells, estimation of pyramids of numbers of biomass, lincoln index
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    Any 1 has the specimen paper edexcel for unit 6w2. i looked on www.edexcel.org.uk

    didnt find it

    help, it's tomorrow!
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    From Unit 4 - redox indicators for testing Hydrogen production in respiration, reaction time tests. No option block stuff will be included.

    From Unit 5 - rate of photosynthesis, effects of mineral dificiency on plant / root growth, control of growth in plants (e.g. auxins), breeding (i have no idea!), ecology - could be determining pH, water content of soil etc. or population stuff (lincoln index).

    Chromotography is also possible, but unlikely.
 
 
 
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