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  1. H

    A level Biology: Post your doubts here!

    hydrolytic enz. catalyse the hydrolyses of macromolecules to their constitute monomers by catalysing the breakage of bonds between the monomer units eg.amylase catalyse the hydrolysis of starch to maltose by breaking the glycosidic bonds
  2. H

    A level Biology: Post your doubts here!

    well its D i believe because lysosomes mainly contain hydrolytic enzymes so the enzyme activity in lyso. is highest
  3. H

    A level Biology: Post your doubts here!

    can u send me the ques..
  4. H

    A level Biology: Post your doubts here!

    check this out https://www.xtremepapers.com/community/threads/a-level-biology-post-your-doubts-here.9858/page-259 i wrote it there hope it helps!!
  5. H

    A level Biology: Post your doubts here!

    u really r a great help !! may God bless u and u get straight A*s (y)
  6. H

    A level Biology: Post your doubts here!

    thanks a lot!!:D
  7. H

    AS Biology 33 2015 M/J

    th thanks a bunch!!
  8. H

    A level Biology: Post your doubts here!

    plz if any one has notes about serial and simple dilution in paper 5 can u pass it on !
  9. H

    A level Biology: Post your doubts here!

    well inactivity is due to the low kinetic energy at low temp. so both the substrate and the enzyme move about very slowly and so almost no collisions occur and the rate of reaction drop but no bonds are broken and the shape of the enzyme is not distorted it and it can regain its activity once u...
  10. H

    A level Biology: Post your doubts here!

    nope
  11. H

    A level Biology: Post your doubts here!

    C
  12. H

    A level Biology: Post your doubts here!

    chloroplasts and mitochodria
  13. H

    A level Biology: Post your doubts here!

    well i think it is about drawing error bars so if u draw a bar chart representing the mean values of 2 sets of data and then draw an error bar extending 2 standard errors above the mean value and 2 standard errors below the mean value then we can be sure that the true mean value lies within the...
  14. H

    *Biology Paper 5 tips*

    thanks a lot! may God bless u and u get straight A*s! but what was the thread method of measuring the length of the plant?
  15. H

    A level Biology: Post your doubts here!

    thanks a bunch and good luck with ur exams :D(y)
  16. H

    A level Biology: Post your doubts here!

    plz any notes on paper 5!!
  17. H

    A level Biology: Post your doubts here!

    excuse me.... in gene tech.. the use of enzymes that catalyses the formation of GFP flouresence protein in order to identify whether the bacteria has taken up the plasmid or no.... wont it only identify if the plasmid was taken or no but not particularly if the recombinant plasmid was taken ??
  18. H

    AS Level Biology: Topical Questions

    thnx a lot :) and plz what about hill reaction in photosynthesis is it there?
  19. H

    AS Level Biology: Topical Questions

    hello .. plz i need some help here !! i read that the same enzyme can catalyse both the forward and the bacward reactions ...but how is that isnt it like sub+enz=prod so if we take it backwards it will be like product+enz=sub but the product has different shape to the sub and the active site so...
  20. H

    A level Biology: Post your doubts here!

    hello.. any notes for biology A-level ?! plz i really need it
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