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  1. Karim Nabil

    PHYSICS (0625) past papers 1999-2001

    more physics....
  2. Karim Nabil

    PHYSICS (0625) past papers 1999-2001

    hello guys, many people searched for older years of physics past papers but to no avail, i confess i was one of those guys but after searching the internet i was able to find it! so here are the physics papers !
  3. Karim Nabil

    Biology; Chemistry; Physics: Post your doubts here!

    you're welcome!
  4. Karim Nabil

    Arabic edexcel as a first language Anyone ?

    15times ! plus 50 3lamat trqeemm plus 2-3 she3r plus 10 t3berat adbya ,7km plus 20 linking words this will fill your article and you will get the best grades isa ;)
  5. Karim Nabil

    A level Biology: Post your doubts here!

    You are welcome!
  6. Karim Nabil

    A level Biology: Post your doubts here!

    At the first the egg cell was haploid cell (1n) , then after fertilization occurs, it became a diploid cell (2n), after that cell is in interphase where growth and DNA replication occurs(almost 90% of the cell cycle time),in interphase cell became 4n, the cell enters mitosis with the same...
  7. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    You're most welcome!
  8. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    #solved but for future doubts you have to visit this thread, as this is only for O-level https://www.xtremepapers.com/community/threads/a-level-biology-post-your-doubts-here.9858/page-136#post-749874
  9. Karim Nabil

    Biology; Chemistry; Physics: Post your doubts here!

    A bistable circuit is a sort of electronic switch: it may use fancy logic, but ultimately it is just a switch that has two 'states', like on and off, or bright and dim. And there is a way that the circuit can be set to one 'state' or the other. So maybe when it is dark in the room, the switch is...
  10. Karim Nabil

    Arabic edexcel as a first language Anyone ?

    you mean أساليب انشائية ? الاستفهام=؟ !=التعجب =ما أروع:ما أسوء ؟!=الاستفهام التعجبي=سؤال ليس له جواب النداء التمني الترجي المدح الذم الاغراء التحذير النهي:لا+الفعل المضارع النفي الأمر
  11. Karim Nabil

    |||♣Any Past-paper Needed♣|||ASK HERE :)

    you're welcome!:) yeah, actually they upload june and november session at a time for each year!
  12. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    it is only explaining you how to do this, no angles were measured!! Hope that helped you!
  13. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    R1*3A/2L=R2*A/L R1*3A/2L=R2*A/L R1*3/2=R2 R1*3=R2*2 R1/R2=2/3 RATIO=2/3
  14. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    my pleasure!
  15. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    Hope that helped you!;)
  16. Karim Nabil

    A level Biology: Post your doubts here!

    my pleasure!;) look,CHD develops if blood supply to the heart muscle is reduced due to thrombus or atherosclerosis , in this case we treat CHD by coronary artery by-pass surgery this treatment is to improve or increase blood supply to the heart therefore more oxygen and nutrients supplied to...
  17. Karim Nabil

    |||♣Any Past-paper Needed♣|||ASK HERE :)

    well, it is here in XTREME PAPERS anyway, here is the link :): http://papers.xtremepapers.com/CIE/Cambridge%20IGCSE/Information%20and%20Communication%20Technology%20(0417)/
  18. Karim Nabil

    English (0510) LISTENING TRACKS oct/nov 2013

    here you go! http://www.mediafire.com/download/45uyuhey6va45c2/0510+Paper+4+Nov+2013.mp3
  19. Karim Nabil

    A level Biology: Post your doubts here!

    q22; in q22 questin asks about maximum no. of hydrogen bonds in a DNA molecule of 700 pairs, we know that C pairs with G by 3 hydrogen bonds and A pairs with T by 2 hydrogen bond as he is saying maximum no. of h2 bonds we consider that DNA molecule has only C=G pairs so 3*700=2100 bonds...
  20. Karim Nabil

    CIE Oct/Nov 2013 papers with marking schemes

    http://papers.xtremepapers.com/CIE/Cambridge%20IGCSE/Business%20Studies%20(0450)/
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