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  1. H

    A2 Biology | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_s10_qp_51.pdf q1 a ii...dont u feel ms is wrong when saying methid of varying light intensity....cos question dint aked to vary it just asked to measure rate at low intensity for both leaves
  2. H

    A2 Biology | Post your doubts here

    its b/c they are different types of leaves.......well leave it....cn u elaborate on the dry mass thing a bit more....how water will effect reading
  3. H

    A2 Biology | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_s10_qp_51.pdf q2 last part...y cnt we use infected liver of mass to obtain plasmodium
  4. H

    A2 Biology | Post your doubts here

    where is change in mass??? its written mean mass of leaves
  5. H

    A2 Biology | Post your doubts here

    NO WE R NOT investiggating rate of PHOTOSYNTHESIS ANYWHERE!!!
  6. H

    A2 Biology | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w10_qp_53.pdf q1 c (ii) i cnt understand how s.d shows reliablity of our results
  7. H

    A2 Biology | Post your doubts here

    yea cos at higher temp photosystem myt get damged
  8. H

    A2 Biology | Post your doubts here

    and guyx plxx do discuus....its scaring me Paper 5 and nobody is interested in it
  9. H

    A2 Biology | Post your doubts here

    this one
  10. H

    A2 Biology | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w10_qp_51.pdf q1 independent variable: 1. ref. to a systematic way of obtaining leaves; e.g. 3rd leaf from the apex / different heights / all from the same height / equal light exposure now WTH he...
  11. H

    A2 Biology | Post your doubts here

    i cat understand t test......though i knw how to use it and how to cum to cnclusion......bt i have sum cnfusions.....well wat are these t values......i mean wat they represent........and wats the link of 0.05 significance level with 95 percent
  12. H

    A2 Biology | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_s11_qp_51.pdf in question 1 plan part....why it says same mass of potato each tym.....if we are calculating percentage change in mass it doesn't matters.........isnt it
  13. H

    Chemistry 42....how did it go?..expected GT

    well for enthaply change of hydration definition....i wrote when ion completely dissolves in excess of water.......is it ryt or was it a must to mention infinitely dilute soln.?
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