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  1. Hisham Khan

    A level Biology: Post your doubts here!

    I don't get it.Nor can I waste my brain cells too focus on it haha. Funny thing is I got 37/40 in may june 14 paper where threshold for A was 26 lol and in some papers I got low where threshold were in 30s.Intresting
  2. Hisham Khan

    A level Biology: Post your doubts here!

    As stated stroke volume is volume of blood pumped by EACH contraction of a ventricle. So as ventricular end-diastolic volume increases,so will the volume of blood pumped.So A and B are wrong. but obviously volume pumped will not be proportional to volume pumped,which kinda makes sense because...
  3. Hisham Khan

    A level Biology: Post your doubts here!

    Guess what guys!,I found a question which is basically the same thing but with different wordings lul in 2014 paper. Btw I have memorized the question 30 to be either both 4 or both 4 and 5 cause it comes in every paper xD
  4. Hisham Khan

    A level Biology: Post your doubts here!

    I think pressure in left atrium is higher ..
  5. Hisham Khan

    A level Biology: Post your doubts here!

    Don't laugh.I know you're laughing. *Angry face* :P. And Thanks :D
  6. Hisham Khan

    A level Biology: Post your doubts here!

    I thought so as well but sadly it's C lol
  7. Hisham Khan

    A level Biology: Post your doubts here!

    Can anyone help.I don't get it. Don't you dare check the answer from past paper xD.I don't get it.
  8. Hisham Khan

    A level Biology: Post your doubts here!

    My brother's freind got a A* after getting a D in As practical
  9. Hisham Khan

    A level Biology: Post your doubts here!

    Strange question hmm.Seems like this is from an old pastpaper and not from our syllabus or I'm stupid!!!. Between what's the answer, B?
  10. Hisham Khan

    As Level Biology Paper 1 predictions

    Okay I know this post might sound silly but any questions or guess paper which might come in paper can be posted here as any little and tiny help can really help someone. You don't even know how much it has benifited me or someone else because of these tiny things
  11. Hisham Khan

    A level Biology: Post your doubts here!

    I hate nerds :(
  12. Hisham Khan

    A level Biology: Post your doubts here!

    The microscope question also destroyed me upto some extent xD but rest paper 33 was pretty easy as well and inshallah lets hope for an A! :D. Me:Mom I got a B in practicals! Mom:Come here Me:HERE FOR THE TREAT! Mom:strangles me, :P
  13. Hisham Khan

    A level Biology: Post your doubts here!

    I dont think it will be that low.Definetly 31-32 because in 2017 and march 2018,thresholds were somewhere there.
  14. Hisham Khan

    A level Biology: Post your doubts here!

    wdym.Not at all or coudn't identify? lul.I warned you questions will be hard but you are pretty good in biology so don't worry :D if not at all,its pretty useless now but to focus and everything in less then 30 sec just forward the stage micrometer to maximu pussisation by using coarse...
  15. Hisham Khan

    A level Biology: Post your doubts here!

    Pls help me with this q,I beg !!!!.I dont get any point.
  16. Hisham Khan

    A level Biology: Post your doubts here!

    Cilia aren't paralysed during asthma attack.That happens because of tar during smoking. Scar tissues doesen't mean cilia are paralysed btw.So,to remove excessive mucus ciliated cells have to increase their activity. Btw you can pretty much get the answer without even understanding this fact as...
  17. Hisham Khan

    A level Biology: Post your doubts here!

    They didn't write the correct question.They wrote 700 base pairs not 700 neucleotides. If Its 700 base pairs then remember there will be min 1400 hydrogen bonds!
  18. Hisham Khan

    A level Biology: Post your doubts here!

    Hmm what??. 1 base pair means A-T or C-G.A-T base pair have 2 hydrogen bonds and C-G base pair have 3 hydrogen bonds. You want minimum number of hydrogen bonds?.So 700 base pairs into 2 (considering all base pairs are A-T)=1400.This answer is confirmed from the mark scheme.. And max 700 into 3...
  19. Hisham Khan

    A level Biology: Post your doubts here!

    I'm so scared :P.In some papers I get over 35 and in some hard ones 26 etc lol in p1
  20. Hisham Khan

    A level Biology: Post your doubts here!

    If they had sank to the bottom,why would their be only a single organelle present?
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