• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. S

    A level Biology: Post your doubts here!

    .. in 38 multiply all the numbers in one row for e.g for P 10000 x0.1 x1.0 , then you would have gotten the total energy for species P , because the energy valu for one individual is o.1 (its mass)x 1.0(amount of enrgy per one unit mass) so for all the species the ans is multiplied by the...
  2. S

    A level Biology: Post your doubts here!

    oh sorry I made a typing error , correction a cuticle is NOT a tissues but it's always included
  3. S

    A level Biology: Post your doubts here!

    You're welcome :)
  4. S

    A level Biology: Post your doubts here!

    through the trend u can see A & D have almost same %. And B & C have almost same %. So now C cannot b adenine since its niland it is thymine. Now when C is thymine the matching % is B.So the ans is B... Hope u get it... some one else explained it already :p.. in 38 multiply all the numbers in...
  5. S

    A level Biology: Post your doubts here!

    oh yes I forgot. Okay so we know that in a plan diagram it shows the distribution of TISSUES , so in B a layer of palisade cells is a tissue so it is included , a vascular bundle is also a tissue, again included, now in D xylem vessel elements are actually dead CELLS , and in a plan diagram no...
  6. S

    A level Biology: Post your doubts here!

    Thanks a lot :D finally I got it hehe
  7. S

    A level Biology: Post your doubts here!

    OOps my bad I meant 2010 here's the link: http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w10_qp_11.pdf
  8. S

    A level Biology: Post your doubts here!

    Q2 Mrna leaves the nucleus after being made to reach the ribosomes for DNA translation in protein synthesis and the nucleolus in the nucleus makes ribosomes which leave to stay in the cytoplasm so 2 and 3 are correct and DNA is always in the nucleus.15 it cannot be active transport because it's...
  9. S

    A level Biology: Post your doubts here!

    Is it wrong when talking about HIV virus to say it affects the t lymphocytes without being specific that it's the T helper lymphocytes? I wrote that in p2 , and when CO2 REACTS WITH H2O is it wrong if I right down directly that hydrogen carbonate ions and hydrogen ions are formed , without...
  10. S

    A level Biology: Post your doubts here!

    alsalum allaykom http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w11_qp_11.pdf Q 22 , can some explain please?
  11. S

    A level Biology: Post your doubts here!

    It's B , because in my book it's written there's a drug called zidovudine which is similar to the nucleotide containing the base thymine, zidovudine binds to the viral enzyme reverse transcriptase and blocks it's action , stopping the replication of the viral genetic material and leading to an...
  12. S

    A level Biology: Post your doubts here!

    Oh so you mean the lines X and Y drawn on the graph and so it has nothing to do with the curve !oh ok thanks a lot for the help :D
  13. S

    Chemistry: Post your doubts here!

    thanks a lot :) I AM DONE WITH CHEMISTRY AS :D
  14. S

    Chemistry: Post your doubts here!

    how do I draw isopropyle methanoate? Why in Q 28 A and b are absolutely wrong? Sorry but I didn't get it and what about first question link? thanks a lot for the help
  15. S

    Chemistry P1 Challenging Questions Preparation

    *Chemistry P1 May/June 2003 Fully Explained* | XtremePapers Community
  16. S

    Chemistry: Post your doubts here!

    hey please I have p1 today and mAny doubts can you please clear them? http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w05_qp_1.pdf q 12,17...
  17. S

    A level Biology: Post your doubts here!

    if the person is inhaling more air wouldn't the lines becoming higher like the curves peak becomes higher?:/ doesn't X and Y represent the tidal volume?
  18. S

    Chemistry: Post your doubts here!

    alsalum allaykom http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w12_qp_13.pdf question 34 and 36 please :/
  19. S

    Chemistry: Post your doubts here!

    WHAT about D? if the compound was NH3 for example so the n number is 3 so you divided the bond energy by 3 and the answer will be correct right?
  20. S

    Chemistry: Post your doubts here!

    the why in OCT/NOV 2012 13 THE FIRST answer is D which is not a straight line but a curve?
Top