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  1. Hisham Khan

    A level Biology: Post your doubts here!

    You're Pretty Good.Continue to post uestions!.We need that A right!.As many questions,As many crrect answers in exam!!.I am not sleeping for sehri tonight
  2. Hisham Khan

    A level Biology: Post your doubts here!

    Yes it's bronchus.I made the a bit easier,maybe I was very lazy haha.This is the question.
  3. Hisham Khan

    A level Biology: Post your doubts here!

    A student observed highly folded inner layers when he viewed a part of respiratory systum.Which part was he viewing 1:Trachea 2:Bronchus 3:Bronchioles 4-Alveoli
  4. Hisham Khan

    A level Biology: Post your doubts here!

    Maybe malaria can be transmitted by blood transfusion from tourist maybe but then A should have been correct in this question as well.nvm post other questions
  5. Hisham Khan

    A level Biology: Post your doubts here!

    I know. I was saying in some other past paper they said tourism was correct for malaria because it becomes difficult to control,NOT in this question,in this q,tourism option is wrong for malaria malaria CANT BE TRANSMITTED like tb so that doesent make sense for the prev I solved before this one
  6. Hisham Khan

    A level Biology: Post your doubts here!

    Answer is C. THE thing I'm confused about is why was tourism correct in the previous question because malaria isin't a transmissible disease and in prev mcq they said tourism has social effect and the q is why does it have a social impact which makes it harder to control in the prev question ..
  7. Hisham Khan

    A level Biology: Post your doubts here!

    Can you help me with this q 36?
  8. Hisham Khan

    A level Biology: Post your doubts here!

    Any other question?.I am having a good revision and am in desperate need of some :)
  9. Hisham Khan

    A level Biology: Post your doubts here!

    They are talking about cells at START of cytokinesis so each cell still contain 2 dna molecule in 1 chromosome in 2 chromatids maybe not sure :)
  10. Hisham Khan

    A level Biology: Post your doubts here!

    Why is the answer A.Can anyone help me ????.Why is 1st diagram unsaturated wth?
  11. Hisham Khan

    A level Biology: Post your doubts here!

    That is simple dilution.How did you practicals go btw ?
  12. Hisham Khan

    A level Biology: Post your doubts here!

    Sorry I don't get you.The concentration is halved each time so answer is A.Simple. 8/2=4%. 4/2=2% 2/2=1% 1/2=0.5% and so on
  13. Hisham Khan

    A level Biology: Post your doubts here!

    Concentration is always consectively halfed of the previous conc of volume in serial dilutions so A.Serial dilution came in paper 34 As well I guess 20: Answer D
  14. Hisham Khan

    A level Biology: Post your doubts here!

    Oh I get it :) No u :D
  15. Hisham Khan

    A level Biology: Post your doubts here!

    Wait didn't you say 9?
  16. Hisham Khan

    A level Biology: Post your doubts here!

    why it isin't 10 or 9 ...
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