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  1. areebaization

    Biology paper 4 variant 1

    Nopes
  2. areebaization

    Biology paper 4 variant 1

    how was urs?
  3. areebaization

    Biology paper 4 variant 1

    secrion B was easy but the paper was too lengthy!
  4. areebaization

    biology practical

    best of luck! do tell us know how it goes :)
  5. areebaization

    Chemistry P 41 HERE WE GO!!!!

    Not as good as i wanted it. But yeah i will be doing p4 tomorrow
  6. areebaization

    Chemistry P 41 HERE WE GO!!!!

    same here organic wasn't that easy too
  7. areebaization

    Chemistry P 41 HERE WE GO!!!!

    I am not sure if I'll make it to 65ish :'( yeah 41 what about you guys? Some questions were easy say 3-4 but most were time consuming
  8. areebaization

    Chemistry P 41 HERE WE GO!!!!

    fairly easy? are u sure you're talking about 41?
  9. areebaization

    Biology paper 11 gt

    For the last mentioned Q, I think it was C, (cholera had 3 ticks in a row) :P
  10. areebaization

    Biology P52 GT Poll

    i think p51 and p52 were the same
  11. areebaization

    A level Biology: Post your doubts here!

    I know that :P But precisely which step of translocation needs ATP? 1)for pumping H+ ions out of the seive tube (initial step of translocation) or 2)for loading of sucrose
  12. areebaization

    A level Biology: Post your doubts here!

    why is ATP needed in companion cells?
  13. areebaization

    A level Biology: Post your doubts here!

    YOU'RE SO RIGHT! 700 neucloetides=350 base pairs base pairs x 3 = 1050
  14. areebaization

    A level Biology: Post your doubts here!

    I really have a strong feeling that the ms is wrong this time. The hydrogen bond per each base pair can either be 2( Adenine pairing with Thymine) or 3( Guanine pairing with Uracil). Since they said MAXIMUM, we assume that all the bases had triple bond. So, 1 base pair------>3bonds 700 base...
  15. areebaization

    A level Biology: Post your doubts here!

    its D check again
  16. areebaization

    A level Biology: Post your doubts here!

    Q39 in nov2012 find the % energy is used by the green plants for photosynthesis = 27000/1000000 x 100=2.7%
  17. areebaization

    A level Biology: Post your doubts here!

    Q16 Thats because cholestrol controls fluidity of the cell. Q27 You just have to learn the position of xylem and phloem, what I do is, I just remember the position of xylem (It gives support so it should be in the middle with the exception alignment in the leaf) the other one has to be phloem...
  18. areebaization

    A level Biology: Post your doubts here!

    40 EPG=10 micro metres (0.1mm=10 micrometres) so radius is (50x10)/40 = 12.5 micrometres Area of a circle=pi x r x r =pi x 12.5 x 12.5 = 490 micrometres =4.9 x 10^2 micrometres
  19. areebaization

    *Biology Paper 5 tips*

    There are 3 samples (grazed for 2 years ungrazed, for 10 years andungrazed for 30 years) so degree of freedom is n-1= 3-1 =2 secondly, I think they are accepting 0,05 probabilty. However, someone else might give a better answer.
  20. areebaization

    A level Biology: Post your doubts here!

    Valves I have no idea if I am gonna get any mark for the 3mark question.
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