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  1. xtremeforums

    BIOLOGY PAPER 22

    was description required in the micrograph question?? :eek:
  2. xtremeforums

    BIOLOGY PAPER 22

    there is no negative marking, so if u wrote three other correct points.. you would be awarded the 3 marks.. and the wrong point would be ignored.
  3. xtremeforums

    getting high marks in sat 2 biology

    ok so i did IGCSE biology and got an A* and im doing A level biology at the moment... i need sat 2 for the university im going to apply to... I did a practice test and got 580.. how can i improve my score? i need above 650.. and please tell me which topics of sat 2 biology arent covered in AS...
  4. xtremeforums

    BIOLOGY PAPER 22

    Amylopectin contains 1-6 glycosidic bonds, and 1-4 glycosidic bonds too...
  5. xtremeforums

    BIOLOGY PAPER 22

    "linkage" is a very common term... the term "glycosidic" was required... Check november 2008 paper 2. This was a repeated question. And check the mark scheme for the answer.
  6. xtremeforums

    BIOLOGY PAPER 22

    It depends on whether u wrote tertiary consumer or tertiary trophic level... The humpback whale was a secondary consumer, and was at a tertiary trophic level...
  7. xtremeforums

    BIOLOGY PAPER 22

    Chloroplast* u mean? not chlorophyll...
  8. xtremeforums

    BIOLOGY PAPER 22

    i wrote competitive inhibitor as well, because increasing the concentration of ATP was having an effect on the rate of DNA synthesis.. thus competitive... and the graph wasnt reaching a plateau i think... but the majority wrote non competitive... :eek: I ddnt describe the graph... the...
  9. xtremeforums

    BIOLOGY PAPER 22

    What did u write for the typhoid drug?
  10. xtremeforums

    BIOLOGY PAPER 22

    the length...
  11. xtremeforums

    BIOLOGY PAPER 22

    the energy loss is not 10%, the energy that is transferred is 10%.. so the total loss is 90%... and as you go further in a food chain, energy decreases, due to successive loss of energy at each trophic level... For this question, i wrote that it feeds on more than one population of animals...
  12. xtremeforums

    BIOLOGY PAPER 22

    unless it changes the meaning of the sentence, i dont think u'd lose any marks..
  13. xtremeforums

    BIOLOGY PAPER 22

    inshAllah!!
  14. xtremeforums

    BIOLOGY PAPER 22

    EXACTLY... drugs refer to many medicines, and the question was, which one of those "many drugs" can cure typhoid... So antibiotic, should be the correct answer... according to me
  15. xtremeforums

    BIOLOGY PAPER 22

    antibiotic is a type of drug...
  16. xtremeforums

    BIOLOGY PAPER 22

    i wrote about that as well... i mentioned exercise, healthy diet, smoking... and high cost of surgery...
  17. xtremeforums

    BIOLOGY PAPER 22

    yah hes right, eg some antibiotic may inhibit the enzyme that links together the peptidoglycans in the bacterial cell wall, thus the bacteria burst when they absorb water by osmosis...
  18. xtremeforums

    BIOLOGY PAPER 22

    i messed up in many questions too! But don't worry... lets just hope the curve is really low :)
  19. xtremeforums

    BIOLOGY PAPER 22

    Good! (y) That would impress the CIE :D
  20. xtremeforums

    BIOLOGY PAPER 22

    yah they are.. drugs=medicine=antibiotic...
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