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Search results

  1. A*****

    Chemistry: Post your doubts here!

    Yeah
  2. A*****

    A level Biology: Post your doubts here!

    Cool down bro:p
  3. A*****

    Chemistry: Post your doubts here!

    It is C
  4. A*****

    A level Biology: Post your doubts here!

    YES THIS IS TRUE THAT AFTER SOME TIME, THE CONCENTRATION SHOULD BE ZERO BUT YOU CAN NOT PROVE THAT IT IS NOT ZERO AT TIME ZERO
  5. A*****

    A level Biology: Post your doubts here!

    Come on!!!! see the graph carefully IT IS STARTING FROM THE ORIGIN
  6. A*****

    A level Biology: Post your doubts here!

    Okay so what do u think of the INITIAL part of the graph? How could it be max at time zero?
  7. A*****

    A level Biology: Post your doubts here!

    And one more thing...first es complexes will form and then they will break...this will happen with tym
  8. A*****

    A level Biology: Post your doubts here!

    But it is pretty obvious that at time zero there would be no es complexes... From where on earth have they come from when there was no enzyme?
  9. A*****

    A level Biology: Post your doubts here!

    This Hisham Khan
  10. A*****

    A level Biology: Post your doubts here!

    So what's the reason of it being wrong? The point which I said is correct?
  11. A*****

    A level Biology: Post your doubts here!

    Bio is literally rediculous...I mean it has lammmeeeee logics, in some questions they apply a particular logic and in the other they apply some other:mad:
  12. A*****

    A level Biology: Post your doubts here!

    No matter how much the substrate is in exess but still it will take SOME time to form the es complexes and upto some time the concentration will increase and then decrease
  13. A*****

    A level Biology: Post your doubts here!

    In the mark scheme, the answer for this is D but I strongly think that it should be A and I think that in some previous paper, it has been marked as A How can the es complexes' concentration be max at time zero? Initially it should be zero, then rise to max and then decreaseo_O
  14. A*****

    A level Biology: Post your doubts here!

    The only reason I can think of about the statement in previous question being wrong is that water and ions can move laterally as well from vessel to vessel via pits, which is not an apoplastic pathway maybe...so the statement that the ions take an apoplastic pathway 'only' will be wrong
  15. A*****

    A level Biology: Post your doubts here!

    So it would be only necessary for those entry tests happening before the results
  16. A*****

    A level Biology: Post your doubts here!

    What's that?
  17. A*****

    Chemistry: Post your doubts here!

    No it is D
  18. A*****

    Chemistry: Post your doubts here!

    Sulfuric acid is used with KMnO4 during oxidation that is why we write 'acidified' KMnO4
  19. A*****

    Chemistry: Post your doubts here!

    Idk why I am confusing this all but can u plz write an equation to show the behaviour of sulfuric acid as an acid in the reaction with ethanol?
  20. A*****

    Chemistry: Post your doubts here!

    That's the conversion from ethanol to ethene, right? And does the H+ from sulfuric acid react with OH- from alcohol?
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