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  1. Karim Nabil

    A level Biology: Post your doubts here!

    dude... please be more specifico_O i answered based on your question above, it was asking why cells are genetically identical but in the qp, it is saying how mitosis produce genetically identical cells. answer will be: DNA replication is semi-conservative idea of complementary base pairing each...
  2. Karim Nabil

    A level Biology: Post your doubts here!

    urease converts urea into ammonia by deamination ammonia is converted into nitrite then into nitrate by the help of nitrobacter/nitrosomonas bacteria, this is nitrification process
  3. Karim Nabil

    A level Biology: Post your doubts here!

    to avoid mutations to avoid formation of a disease e.g. sickle cell anaemia, or cancer to avoid tissue rejection by the immune system to avoid formation of an altered protein
  4. Karim Nabil

    A level Biology: Post your doubts here!

    because resolution is the ability to differentiate between two points not magnification
  5. Karim Nabil

    A level Biology: Post your doubts here!

    my pleasure ;) !
  6. Karim Nabil

    A level Biology: Post your doubts here!

    it's correct but it should be a more steeper graph
  7. Karim Nabil

    A level Biology: Post your doubts here!

    EFFICIENCY=(total energy absorbed by sea urchins/total energy availabe in kelps)*100
  8. Karim Nabil

    Mathematics: Post your doubts here!

    you are most welcome! ;)
  9. Karim Nabil

    Mathematics: Post your doubts here!

    measure angles for each country and then compare values with northern ireland e.g. if england measures at 270 degrees and ireland is 20 then cross multiply: 20-->2 270->x x=(270*2)/20 x=27 then...repeat for remaining countries
  10. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    assume that total volume of rods is not lesser than 7cm^3(b'coz rods are arranged close together with small air gaps b/w them) e.g.: 7.83-0.8=7cm^3 then... calculate density using formulae provided
  11. Karim Nabil

    ICT THEORY!!!

    http://www.mediafire.com/view/84ebl95dhjmsl8k/ict+book.pdf
  12. Karim Nabil

    ICT THEORY!!!

    ok, now gimme a sample?
  13. Karim Nabil

    English (0510) LISTENING TRACKS oct/nov 2013

    too lazy to search for it as i have finished english last year plus i am having exams these days :p
  14. Karim Nabil

    English (0510) LISTENING TRACKS oct/nov 2013

    yeah, i do but unfortunately i am having them as a hard copy only :(
  15. Karim Nabil

    I.C.T have a unique marking ! you should provide them with the marking points in a sentence...

    I.C.T have a unique marking ! you should provide them with the marking points in a sentence along with your good english unless they have asked you to give,list,etc.. for now, i am trying to provide these 3 things in my answer.
  16. Karim Nabil

    English (0510) LISTENING TRACKS oct/nov 2013

    yes, i do.. http://www.mediafire.com/view/72g0t5qnz7tl24d/English%20as%20a%20Second%20Language.pdf
  17. Karim Nabil

    English (0510) LISTENING TRACKS oct/nov 2013

    for english? if so, this website you quoted have all the listening tracks except year 2013 you can also try this for qp and ms: http://papers.xtremepapers.com/CIE/Cambridge IGCSE/English - Second Language (oral endorsement) (0510)/
  18. Karim Nabil

    PHYSICS (0625) past papers 1999-2001

    you are most welcome ;)
  19. Karim Nabil

    English (0510) LISTENING TRACKS oct/nov 2013

    here are some tracks... http://papers.xtremepapers.com/CIE/Cambridge%20IGCSE/German%20-%20Foreign%20Language%20(0525)/
  20. Karim Nabil

    it is a good subject, but the way it is corrected makes me a little nervous :/

    it is a good subject, but the way it is corrected makes me a little nervous :/
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