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  1. A

    A level Biology: Post your doubts here!

    also when cie talks about bronchioles do you take it as respiratory or terminal and respiratory contains goblet cells
  2. A

    A level Biology: Post your doubts here!

    no1 uses this forum... but here it goes! does the separation of the sister chromatids by the duplication of the centromere happen in metaphase or anaphase? some textbooks so metaphase and anaphase but I dont know which stage is good for cambridge or which stage it occurs closest to. By looking...
  3. A

    Physics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s09_qp_2.pdf could someone explain 4b)) i thought that the extension would be 1/2 x 2 because 2 springs halve the extension when in same row and 2 springs double extension when in...
  4. A

    Physics: Post your doubts here!

    Can someone Please Please Please answer my Question's :(:cry: (it got ignored 3 times) http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_23.pdf 7bii) I don't get why charged particle is not an isolated system...
  5. A

    Physics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_23.pdf 7bii) I don't get why charged particle is not an isolated system http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_13.pdf 29) I just don't understand...
  6. A

    A level Biology: Post your doubts here!

    For this paper shouldn't the answer for question 10) be B because it forms a disulfide bond due to the S-H groups? Thank you
  7. A

    Physics: Post your doubts here!

    Thank you very much sir
  8. A

    Physics: Post your doubts here!

    Can somebody do question 3di) from the May June 2011 paper variant 23? It would be very helpful... I've been working on it but no matter how hard I think I can't get the answer Thank you for your Time
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