• 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. Hisham Khan

    A level Biology: Post your doubts here!

    Pls answer this uestion as well.WHATS THE ANSWER OT THIS Q31
  2. Hisham Khan

    A level Biology: Post your doubts here!

    I saw a pastpaper in which they asked a social reason because of which it is difficult to control malaria and it was travel but in prev past paper they said tourism and travel is wrong btw it should be because malaria isin't a contagious diseases like TB etc so WHY?????
  3. Hisham Khan

    A level Biology: Post your doubts here!

    Too many pics oops
  4. Hisham Khan

    A level Biology: Post your doubts here!

    Can Anyone help me with this question.I don't get it
  5. Hisham Khan

    A level Biology: Post your doubts here!

    Hear this song.IT'S BEAUTIFUL
  6. Hisham Khan

    A level Biology: Post your doubts here!

    I did my iftari and it looks like I'm going to vomit :(:(:(:(
  7. Hisham Khan

    A level Biology: Post your doubts here!

  8. Hisham Khan

    A level Biology: Post your doubts here!

    B cells do act as antigen presenting cells but it is really complex.Mr genius did some research haha.So then I was like tf and say the examiner report and well:
  9. Hisham Khan

    A level Biology: Post your doubts here!

    B
  10. Hisham Khan

    A level Biology: Post your doubts here!

    The q was simple.B for bone marrow and t for thymus. SO Option A and B out so it has to be C or D. mediated response occurs only in T so option D
  11. Hisham Khan

    A level Biology: Post your doubts here!

    Answer is A?
  12. Hisham Khan

    A level Biology: Post your doubts here!

    Yes my bad
  13. Hisham Khan

    A level Biology: Post your doubts here!

    It's B. Malaria is spread by vector. It isin't a genetic or transmissible diseases lol. A patient with tb can pass to his child if he sneeze but malaria is only transferred by mosquito itself..malaria as it is passed by vector anopheles mosquito, fetul blood is seperate from mother's blood so...
  14. Hisham Khan

    A level Biology: Post your doubts here!

    B
  15. Hisham Khan

    A level Biology: Post your doubts here!

    It is Cell q (B lymphocytes) which binds with a antigen of a pathogen to multiply into more B cells and plasma cells by mitosis.Hope this helps
  16. Hisham Khan

    A level Biology: Post your doubts here!

    I'm bored....
  17. Hisham Khan

    A level Biology: Post your doubts here!

    As it is not produced naturally and is injected,it is artificial. Now antibodies are introduced directly through injection,not pathogen against which body itself produce antibodies,so Artifical PASSIVE
  18. Hisham Khan

    A level Biology: Post your doubts here!

    I don't think you need to go that deep lul
  19. Hisham Khan

    A level Biology: Post your doubts here!

    antibodies are not inherited as the famous indian saying itself says:bobs haha xD. Basically it's by transfer of blood or colustrum by which babies get it
  20. Hisham Khan

    A level Biology: Post your doubts here!

    Smoking doesen't reduce the surface area available directly. So B is the only option left :)
Top