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  1. R

    How was Biology Paper 42

    i left questions that were like 6-8 marks. And the paper was easy but it was too long. I didnt have time to write all the answers And in my hurry i made mistakes too about 5-6 marks. Im hoping the gt will be 7oish so that i can get an A inshallah
  2. R

    A level Biology: Post your doubts here!

    threshold?
  3. R

    A level Biology: Post your doubts here!

    hey and what are difference between continous and discontinous variation . Can u explain this fully. And my other question: And in section b where we have to answer 1 question. Whenever i answer those questions my answers are not very long but they do contain all the points in the markscheme...
  4. R

    A level Biology: Post your doubts here!

    hey guys what is the difference between embro, foetus, and zygote? And in section b where we have to answer 1 question. Whenever i answer those questions my answers are not very long but they do contain all the points in the markscheme. Like if they give a space of 3 pages my answer to a come...
  5. R

    AS BIOLOGY P-33

    in high power diagram if we see nucleus and its stained so do we draw the chromatin threads. And if we see nucleolus so do we draw the nucleus?
  6. R

    AS BIOLOGY P-33

    and is there a post where all the errors in different experiments is written. can somebdy plzz tell me
  7. R

    AS BIOLOGY P-33

    hey guys how will we test for fungal amylase if it is given. Plzz tell
  8. R

    AS BIOLOGY P-33

    how do we draw cambium do we just make a layer between phloem and xylem and label it as cambium? and what were the fibres u were talking about?
  9. R

    AS BIOLOGY P-33

    how will amylase be tested
  10. R

    AS BIOLOGY P-33

    guys in cell division if a cell is in prophase should we draw the chromatin threads in our low power diagram and nuclelous if we see them
  11. R

    Chemistry: Post your doubts here!

    hey guys can anybody tell me the different purposes of glc, mass spectrometry, nmr, hplc and tlc
  12. R

    Chemistry: Post your doubts here!

    in qs 7c(ii) n09 41 how did we determine that 0-ch3 is on 4th position on benzene ring? answer plzz
  13. R

    Chemistry: Post your doubts here!

    Can anybody show me the diagram i must draw of tertiary structure of protein asked in qs 8a j08 chemistry ppr(A2). Can somebody post the picture of the diagram they drew. And in qs 8b) can somebdy explain me why we didnt use all the tripeptides given. bcuz i used all. N terminal end and C...
  14. R

    A level Biology: Post your doubts here!

    from which book did u read this. I study bio a2 from mary jones and it did not have this information i think. So is there any additional material which is in the syllabus but not present in the mary jones book?
  15. R

    A level Biology: Post your doubts here!

    can anybody explain what is meant by divergence and how to answer qs5b of J10/42 qp: http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20%289700%29/9700_s10_qp_42.pdf
  16. R

    A level Biology: Post your doubts here!

    are u guys studying gross productivity and primary prodcutivity?
  17. R

    A level Biology: Post your doubts here!

    hey can any1 explain the meselsohn dna experiment. I cant understand it
  18. R

    Chemistry: Post your doubts here!

    can anybody explain how to calculate 2f of j08 and 2e of j07. im confused as to how to calculate x from the data given. can somebdy tell me the whole procedure that we will use. I only drew one construction line in a middle of the graph
  19. R

    Chemistry: Post your doubts here!

    hey guys can anybody tell me qs 2e the reasoning for pt 3 to be anomalous point. i know the reasoning for pt 8
  20. R

    Chemistry: Post your doubts here!

    hey in qs 1 where there is no asking of the apparatus by the examiners and the y tell us to write on a 7 mark question should we include the drawing of the apparatus as well or we should just write the 7 marks of material
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