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  1. Hisham Khan

    A level Biology: Post your doubts here!

    Each time he repeats the procedure,he gets a 'new' pellet with a 'single' organelle,indicating previous organelles were digested.
  2. Hisham Khan

    A level Biology: Post your doubts here!

    Btw this question is difficult as well
  3. Hisham Khan

    As level Biology paper 1 Help!!!

    It's answer is A which I got by toka from artery and vein only.But how am I to know about bronchus and bronchioles???
  4. Hisham Khan

    A level Biology: Post your doubts here!

    I have posted them in my forum As level Biology paper 1 Help!!! In help idea and suggestions.Pls check them :D
  5. Hisham Khan

    A level Biology: Post your doubts here!

    It cannot be less turgid when it is already plasmolysed is the hint I guess
  6. Hisham Khan

    A level Biology: Post your doubts here!

    Look first see which options are incorrect. They are cell of same xerophytic plant right?. So now 4th option is water potentiol is 0 in cell Q which is not possible because it's shape is diffeen and flattened. that leaves option A and B. Cells cannot be LESS TURGID when they are PLAMOLYSED. Get...
  7. Hisham Khan

    A level Biology: Post your doubts here!

    I have 4 or 5 questions.Can I ask you? lol
  8. Hisham Khan

    Are these newly endorsed o level books for chem and phy good?

    I'm pretty sure it's still endorsed It is one of the best and easiest to understand.Other books are a bit confusing and I woudn't recommend them. I got a B with guides and all those useless notes and stuff but got a solid A when I studied this book in detail with loads of past papers...
  9. Hisham Khan

    Are these newly endorsed o level books for chem and phy good?

    DONT READ ANY NOTES OR REDSPOT OR ANY OR THESE USELESS BOOKS THEY TELL YOU!. Read the endorsed book for cambridge physics by cambridge by heather kennet and tom duncan. Solve every book question and then solve every Past paper quston,atleast from 2018 to 2013 for an A!.And for Chemistry also...
  10. Hisham Khan

    As level Biology paper 1 Help!!!

    Ans Its answer is C, but the question is why?. lul
  11. Hisham Khan

    As level Biology paper 1 Help!!!

    And this
  12. Hisham Khan

    As level Biology paper 1 Help!!!

    Can anyone pls help explain each of these options A B C D and why 3 of them are wrong?.They are a bit tricky. Answers are A A B respectively
  13. Hisham Khan

    A level Biology: Post your doubts here!

    Between I suggest you go throughly through both of these videos.Best videos to understand topic that is 90% expected to come. Check difference btw histogram and barchart and how to draw each of them in detail!. Also check feb march 2018 papers because thee new type of microscope questions are...
  14. Hisham Khan

    A level Biology: Post your doubts here!

    Your teacher giving you the hint is already big enough or a prediction for questions by itself.I suggest you do read both of them throughly and you'll be just fine :)
  15. Hisham Khan

    A level Biology: Post your doubts here!

    It's easy brother.I think you'll be fully be able to understand it after this video. Basically if you want to half concentration of let say 20 cm3,which's concentration is 1 mol dm-3, you take 10 cm3 from the beaker contaning 20 cm3 of solution and add it to other beaker +10 cm3 water.Then...
  16. Hisham Khan

    A level Biology: Post your doubts here!

    You'll have no idea how similar it was until you see it yourself. I think I did the bio practical much better for which I didn't even practice that much then the chemistry one for which I id over 26 practicals lol.
  17. Hisham Khan

    A level Biology: Post your doubts here!

    Amina I love you!!!!!!!. OMG. Simple dilution came and 3 marks for improvemesnts 1 for error graph came as in our paper which you gave and 1 bar chart came!!!!!!. The style was almost the same!!! thank you so much!. Put 3cm cubed of H and 2 cm cubed of U and 2cm3of benedict etc :DD
  18. Hisham Khan

    A level Biology: Post your doubts here!

    The paper was not hard tbh rather it was easy because they gave more then required steps and Alot of hints which werent needed especially in the test section. This could have been very hard as well and the graph and table were pretty straight forward as well. Lets hopes our practical paper is...
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