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  1. Z

    got some notes for chemistry!)

    Learning outcome 10.1(a) This statement covers the way you draw and name organic structures. Before you go on, you should find and read the statement in your copy of the syllabus. There is a long introduction to this organic section before you get to learning outcome 10.1(a), and it is...
  2. Z

    got some notes for chemistry!)

    Xylem vessels: Consist of dead hollow cells because the walls are lignified and the cell contents disintegrate. The lignin makes the cell wall impermeable so they are in effect waterproof. It also makes the vessels extremely strong and prevents them from collapsing. They have a wide lumen and...
  3. Z

    Urgent Help In Biology!!!!

    Veins The capillaries then join to form larger venules which themselves then join to form veins. Since at this stage, the pressure of the blood is low, blood needs to be 'encouraged' to flow back to the heart. To prevent any backflow of the blood (particularly important if blood is flowing...
  4. Z

    Urgent Help In Biology!!!!

    did u get this filza???
  5. Z

    Urgent Help In Biology!!!!

    4. Substrate concentration The rate of an enzyme-catalysed reaction shows a curved dependence on substrate concentration. As the substrate concentration increases, the rate increases because more substrate molecules can collide with enzyme molecules, so more reactions will take place. At...
  6. Z

    Urgent Help In Biology!!!!

    Enzymes Enzymes are biological catalysts. There are about 40,000 different enzymes in human cells, each controlling a different chemical reaction. They increase the rate of reactions by a factor of between 106 to 1012 times, allowing the chemical reactions that make life possible to take place...
  7. Z

    Urgent Help In Biology!!!!

    guys stop criticising her and help her instead just wait filza94 im typing everything give me 5 minutes!!!
  8. Z

    Urgent Help In Biology!!!!

    filza 94 have u read ur textbook?
  9. Z

    got some notes for chemistry!)

    filza 94 may i type then for u just tell me the topics
  10. Z

    Factsheet on GROUP II

    hahahaha....................ok guys download it frm there.......
  11. Z

    notes on Oxygen Dissociation Curves

    Guys...........i just uploaded some other notes just as you all wanted do have a look at them and best of luck for your exams frm my side!!!!
  12. Z

    Atomic Structure, Bonding And Periodicity

    notes on Atomic Structure, Bonding And Periodicity
  13. Z

    Observation of the reaction of period 3 elements

    hey why dont you check the notes I uploaded on period 3!!!!!!!! viewtopic.php?f=26&t=6875
  14. Z

    paper 2 organic chemistry notes

  15. Z

    notes on transport in plants

    this may help you guys for AS Biology!!!!!!!!! :) :)
  16. Z

    Factsheet on GROUP II

    if you have been helped let me know!!!
  17. Z

    Factsheet on GROUP II

    :good: :good: :good: :good: :wink:
  18. Z

    GROUP VII THE HALOGENS

    notes on group 7
  19. Z

    chemical periodicity notes

    :) :) :) :)
  20. Z

    MECHANICS NOTES BY AAKASH POKHERAL

    guys if you find my notes helpful plz let me know!!! i like to help you all................and want to share my resources with everyone.
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