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  1. NouranAyman

    BIOLOGY PAPER 22

    what did u write for the question about water, and the one about the graph , the enzyme one Atp and ara ATP
  2. NouranAyman

    BIOLOGY PAPER 22

    yes :D its right as long as it wasnt seen in the picture (Y)
  3. NouranAyman

    chemistry p3 AS level

    how was it peeps??? :P i think it was gd overall :D I wanted to ask a question! how do we calculate uncertainity??? if its given +-10 for eg blabla then how?
  4. NouranAyman

    BIOLOGY PAPER 22

    firstly for the magnification i got 1600 ;D and for the water question i wrote about ph is suitable and temperature for the activity of enzymes and i dont remember wat else density i guess blabla xD and for DNA stable question i wrote about its structure and the phosphodiester bonds xD nd...
  5. NouranAyman

    BIOLOGY PAPER 22

    Can we start discussion now?? LOL I wanna know what i did was right or wrongg?? :C
  6. NouranAyman

    chemistry p3 AS level

    hw r wee supposed to prepare??
  7. NouranAyman

    BIOLOGY PAPER 22

    i think 43/60! i hope lower!! guys atr 24 hrs pass plz we discuss lol
  8. NouranAyman

    BIOLOGY PAPER 22

    it was okay! please after 24 hourss we should discuss!!!! cuz i donno if i did right or rong it was kinda weird xD
  9. NouranAyman

    BIOLOGY PAPER 22

    Ameen :)
  10. NouranAyman

    Bio paper 2 on 24th!!

    same here isA we all do good :D is it ur first tym? or ur repeating?
  11. NouranAyman

    Bio paper 2 on 24th!!

    thanks :) nd u too
  12. NouranAyman

    i NEED THE BIOLOGY REVISION GUIDE BY MARY JONES PLEASE!

    is it good for revizing just before the exam?? :P
  13. NouranAyman

    Bio paper 2 on 24th!!

    hey you done revizing?? :D
  14. NouranAyman

    Bio paper 2 on 24th!!

    Im sitting for first time!
  15. NouranAyman

    Bio paper 2 on 24th!!

    Just say about protein synthesis process! Transcription and translation
  16. NouranAyman

    Bio paper 2 on 24th!!

    yes Bio paper tomorow Good Luck to ALL! :D hmm revize the whole syllabus man thats the only way ,, most of the chapters are imp, everything comes and there is no repition in paper 2 so anything might come so just revize as much as u can!! :D and Please remember us in your prayers all of u :)
  17. NouranAyman

    Biology Paper 22 PREDICTION

    IKR!!!!! Omg I hope Allah will help us isA....i just did the oct/nov 2011 nd il revize now then if i have time i will do may/june 2012... I think Revision is way more important cuz questions are never repeated anyway
  18. NouranAyman

    Biology Paper 22 PREDICTION

    When the concentration of carbondioxide increases then the the following reaction happens , carbonic anhydrase the enzyme present in the red blood cells forms carbonic acid on a reaction with water, which dissociates forming hydrogen carbonate and hydrogen ions. hydrogen carbonate leaves the RBC...
  19. NouranAyman

    Question about primary immune response

    Macrophages cut the pathogen displaying its antigen, then T lymphocytes with the suitable receptor will bind with the antigen and divide by mitosis and relase the hormone like substance called cytokines that stimulate the B lymphocytes to divide, also T killer cells can produce toxic substances...
  20. NouranAyman

    Biology Paper 22 PREDICTION

    thank u so much!! :D what about the past papers ?? which is more important to focus on??? cuz revizing takes a lot of time u know
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