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  1. H

    A level Biology: Post your doubts here!

    EXPLAIN how natural selection may bring about evolution? need an anser for this one in continuous prose......just a sample to see.....how we have to explain ms points and link them wid examples
  2. H

    A level Biology: Post your doubts here!

    agreee reading CIE markschemes of biology is hell of a job.......
  3. H

    Tutoring for O/A levels by World Record Holder

    thumps up to u MAN
  4. H

    Mathematics: Post your doubts here!

  5. H

    A level Biology: Post your doubts here!

  6. H

    A level Biology: Post your doubts here!

    they do carry out phagocytsis for sure!!!.....as far as displaying the antigen thing.....i had a gr8 pic showing it.....lmme chek if i have got it now
  7. H

    A level Biology: Post your doubts here!

    cn somebody explain me how synapse are involved with memory
  8. H

    a level statistics video link

    http://www.examsolutions.co.uk/maths-re ... Statistics hope u guys find it helpful
  9. H

    Chemistry: Post your doubts here!

    (i) intermolecular forces shud be very weak or negligible as in most of noble gases and molecular size shud be as small as possible lioke hydrogen .....y???? cos KMT postualtes THAT molecular size is insignificant compared to volume taken by the gas......... ii)at high pressure molecules are...
  10. H

    Political Views

    we shud never support SECULARIST parties like MQM........our leaders shud be like ahmadenijad...........bt they are not......koi aesa leader a jae tou wo kisi political murder ka shikar ho jata hay........we shud pray to allah to save pakistan.......and we shud nt only pray bt act accordingly so...
  11. H

    Mathematics: Post your doubts here!

  12. H

    A level Biology: Post your doubts here!

    outline the behaviour of chromosomes during meiosis? RYT now i want to essentaily kill the examiner who is preparing ms :evil: ......wat nonsense is this.....which textbook of the world says that crossing over occurs during METAPHASE......... reference o/n 2010 p42
  13. H

    Chemistry: Post your doubts here!

    WHY IS E(cell) = E(right)-E(left)??? see QUESTION 1 http://www.xtremepapers.com/CIE/Interna ... 3_qp_4.pdf if we use E(CELL)=E(+ve)-E(-VE ELECTRODE) correct ans will not cum .....!!!!
  14. H

    A level Biology: Post your doubts here!

    brother....2009 ms is correct....cos this is wat happens really....see u split or OXIDISE water to protons,electrons and molecular oxygen..........why its like that.....bcos electrons have to fill that ELECTRON HOLE created as a result of excitation of electron in chlorophyll a molecule of PSII...
  15. H

    A level Biology: Post your doubts here!

    examiners are going WILD in markschemes :(
  16. H

    A level Biology: Post your doubts here!

    cn any one expalin the highlighted points ....and kindly please tell what are tight junctions
  17. H

    A level Biology: Post your doubts here!

    explain three ways in which the cell depicted above is involved in selective reabsorption?
  18. H

    A level Biology: Post your doubts here!

    WATS B??? also tell wats its role
  19. H

    A level Biology: Post your doubts here!

    the very term "vasa recta' is no more used on exams ...instead we simply call them peritubular capillaries
  20. H

    Mathematics: Post your doubts here!

    yea....did a silly miscalculation on calculator :(
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