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  1. xtremeforums

    Biology 33, how was it?

    On the x axis, we had to plot the pH not the leaves... and i got 2.4 micrometers for the calibration.
  2. xtremeforums

    Biology P33 8 Nov

    in latest markschemes, for comparisons, they require one similarity too... So for that, i wrote both are round in shape... i wrote about the number of vascular bundles too... and the position.
  3. xtremeforums

    Biology 33, how was it?

    yah i drew the vascular bundle, it wasnt clear in the microscope though... :cautious: My class got similar answers to mine, for the calibration.
  4. xtremeforums

    Biology 33, how was it?

    wow... i dont remember my total length, but it was a small two digit number! maybe around 10 micrometers...
  5. xtremeforums

    Biology 33, how was it?

    what did u get for the calibration?
  6. xtremeforums

    Biology 33, how was it?

    Lets just hope for a low curve.... What about the calibration question? what did u get?
  7. xtremeforums

    Biology P33 8 Nov

    yah, hopefully
  8. xtremeforums

    Biology 33, how was it?

    On the x axis, pH... And on the y axis, Activity of enzyme... and we were suppose to make two line graphs, and label each one clearly, eg. leaves or bark. Did anyone else do this?
  9. xtremeforums

    Biology P33 8 Nov

    how are people getting 0.5%? :S U were suppose to compare with the solutions u made.. and 0.4 was the most concentrated. U cant guess and write 0.5%...
  10. xtremeforums

    Biology P33 8 Nov

    i got 0.3%, so did my teacher...
  11. xtremeforums

    Biology P33 8 Nov

    We had to make 2 tables... First one: Test tube number, Volume of distilled water, Volume of 0.4% reducing sugar, Concentration made. With units ofcourse. Second one: Concentration of sample, time taken for initial colour change, color change, Conclusions
  12. xtremeforums

    Biology P33 8 Nov

    For the calibration question... what did u get?
  13. xtremeforums

    Biology 33, how was it?

    0.5%? how did u get 0.5%? :confused: the most concentrated solution given to us was 0.4%...
  14. xtremeforums

    Biology P33 8 Nov

    I dont think so, because the difference in concentration is not 0.1%
  15. xtremeforums

    Biology P33 8 Nov

    yup thats what i did. And the estimation of concentration in the sample was 0.3%?
  16. xtremeforums

    Biology 33, how was it?

    What did u get as the estimation of concentration of reducing sugar in the sample?
  17. xtremeforums

    Biology P33 8 Nov

    Can we discuss the answers now?
  18. xtremeforums

    biology paper 1 doubts

    In may/june 06: http://www.xtremepapers.com/papers/...and AS Level/Biology (9700)/9700_s06_qp_1.pdf The answer to question 17 is A. I understand why A is correct, but D also makes sense doesnt it? The cylinders are now placed in a more dilute solution so water moves, by osmosis, into the...
  19. xtremeforums

    A level Biology: Post your doubts here!

    In may/june 06: http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_s06_qp_1.pdf The answer to question 17 is A. I understand why A is correct, but D also makes sense doesnt it? The cylinders are now placed in a more dilute solution...
  20. xtremeforums

    Biology 33, how was it?

    Can we discuss the answers now?
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