• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. A*****

    Mathematics: Post your doubts here!

    See if this helps...
  2. A*****

    Biology; Chemistry; Physics: Post your doubts here!

    Ohh right! Anyways, Best of luck(y)
  3. A*****

    A level Biology: Post your doubts here!

    So can we just generally write that antibodies destroy pathogens, as is written in this mark scheme?
  4. A*****

    A level Biology: Post your doubts here!

    According to mark scheme, the impulses first reach the apex of the heart and then through the purkyne tissues...then what about those tissues which are above the apex?
  5. A*****

    A level Biology: Post your doubts here!

    Mstudent Can antibodies DIRECTLY kill or destroy pathogens?
  6. A*****

    A level Biology: Post your doubts here!

    Okay but how can the epithelium be below the goblet cells? I mean that it is the top most layer, so how can it just go downwards?
  7. A*****

    A level Biology: Post your doubts here!

    But the size of a macrophage is about 21 um, too large to even enter the capillary, then how can it leak from a pore?
  8. A*****

    Mathematics: Post your doubts here!

  9. A*****

    A level Biology: Post your doubts here!

    What is wrong with the 3rd statement? Is it that even neutrophils can not enter tissue fluid? And can lymphocytes enter tissue fluid bqz they are smaller than phagocytes, like tissue fluid DOES contain some sort of WBCs...
  10. A*****

    A level Biology: Post your doubts here!

    Tysmmm...one more thing, where are the epithelial cells then? Have they just become squamous cells and are not visible?
  11. A*****

    Mathematics: Post your doubts here!

    Can someone plz explain how to calculate domain/range of a composite function e.g fg(x) ?
  12. A*****

    A level Biology: Post your doubts here!

    One was from March'17 I think and the other from W15 p22
  13. A*****

    A level Biology: Post your doubts here!

    Are these prominent circles nuclei? If yes, then of which cells, epithelial or goblet??
  14. A*****

    Biology; Chemistry; Physics: Post your doubts here!

    Can anyone plz help me...In the b (iii) 2. part, shouldn't it be a negative sign between the two vertical components? The mark sheme says it's a positive one Solving it with + between them gives a different answer which is also mathematically correct but the answer in the ms comes only with a...
  15. A*****

    Biology; Chemistry; Physics: Post your doubts here!

    R u giving As or A2 this year?
  16. A*****

    A level Biology: Post your doubts here!

    Hahaha I know that:D I was only asking that do we have to learn the geographical spread of malaria because the map for its distribution is not given
  17. A*****

    A level Biology: Post your doubts here!

    The map given is only for anopheles and the question asks to compare its distribution with that of malaria... Anyways, I don't think such questions come too often
  18. A*****

    A level Biology: Post your doubts here!

    But what about this question? :cry:
  19. A*****

    Chemistry: Post your doubts here!

    But see our book says that this reaction IS dehydration
  20. A*****

    Chemistry: Post your doubts here!

    Why can't this be dehydration??
Top