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  1. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    Phoenix Blood >>well i finished bio ol and currently AS student but i can help you though;) xylem dies and its protoplasm(cell content) disintegrates to decrease resistance to water and minerals conducted, its also has cell wall made of lignin which provides support for the xylem tissue because...
  2. Karim Nabil

    A level Biology: Post your doubts here!

    ok i will ask my teacher, she will be more specific than us, and then post it here with details:D
  3. Karim Nabil

    A level Biology: Post your doubts here!

    look sumeru, first of all, the more negative the value, the more solute, therefore water potential is lesser and so on example: solution A has water potential of -250KPa, solution B has water potential of -400KPa now analyse your data as following: -250=less negative,then less solute then more...
  4. Karim Nabil

    A level Biology: Post your doubts here!

    sucrose is actively loaded to the phloem sieve tubes, this lowers water potential so water enters to the tubes by osmosis creating a high hydrostatic pressure, therefore sucrose moves in mass flow from sieve tubes near to source to tubes near to sink, then it is diffused to the sink as...
  5. Karim Nabil

    Biology; Chemistry; Physics: Post your doubts here!

    physics p6 2000-2001 qp-ms ?
  6. Karim Nabil

    A level Biology: Post your doubts here!

    dude low solute potential means less solute,hence more water if not, then be more specific !
  7. Karim Nabil

    A level Biology: Post your doubts here!

    http://www.mediafire.com/download/smfz60x62dw4by5/Cambridge_International_Biology.pdf
  8. Karim Nabil

    A level Biology: Post your doubts here!

    ahhhh...got that, thanks!
  9. Karim Nabil

    Arabic edexcel as a first language Anyone ?

    my pleasure! ISA, WE all succeed in our lives and i really appreciate your Dua'a!:)
  10. Karim Nabil

    A level Biology: Post your doubts here!

    its answer is B, any explanations cause i just squeeze my mind trying to believe it is B
  11. Karim Nabil

    CIE Oct/Nov 2013 papers with marking schemes

    it is now available on the xtremepapers
  12. Karim Nabil

    Arabic edexcel as a first language Anyone ?

    you're welcome!, despite the fact it took from me a lot of time but i am pleased to assist you and hope you get the best grades isa(y)
  13. Karim Nabil

    Arabic tutor?

    MR OMAR
  14. Karim Nabil

    Arabic edexcel as a first language Anyone ?

    first of all in p1 comprehension: this involves answering the questions from the paragraph provided in your own style this can be done easily by these following steps: read the questions and divide it into sections and define the pattern of the question(for eg: whether they ask you about one...
  15. Karim Nabil

    you are welcome!

    you are welcome!
  16. Karim Nabil

    good luck joanna and may allah bless you;)

    good luck joanna and may allah bless you;)
  17. Karim Nabil

    this means that you are going to sit m/j 2014 exam series in KSA, Right ?

    this means that you are going to sit m/j 2014 exam series in KSA, Right ?
  18. Karim Nabil

    well msa, but isn't there any tutors teaching IGCSE Syllubus

    well msa, but isn't there any tutors teaching IGCSE Syllubus
  19. Karim Nabil

    i really appreciate your efforts and i am talking with a female tutor(mrs. marwa) wbu?

    i really appreciate your efforts and i am talking with a female tutor(mrs. marwa) wbu?
  20. Karim Nabil

    Physics, Chemistry and Biology: Post your doubts here!

    You are welcome!
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