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Recent content by Hassani

  1. H

    Biology unit 1 unofficial mark scheme anyone?

    do you mean the definition of the primary structure? if so, it's the specific sequence of amino acids in the polypeptide chain that is coded by a gene
  2. H

    Biology unit 1 unofficial mark scheme anyone?

    I thought the exact same thing, but someone said that it might be a molecule of cholesterol instead of a carrier/channel protein, but according to my knowledge cholesterol contains oxygen so i think our answer is correct
  3. H

    Biology unit 1 unofficial mark scheme anyone?

    Can't remember the choices, can you remind me of them? I think i chose the fatty acid
  4. H

    Biology unit 1 unofficial mark scheme anyone?

    Which question/s did you guys find the most difficult?
  5. H

    Physics n Chemistry Unit 6 IAL exam discussion (How was the paper ?)

    What was the concentration of iron (ii) in the question where we used E and E not? and what was the concentration of iron (II) when we titrated it with MnO4?
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    Physics n Chemistry Unit 6 IAL exam discussion (How was the paper ?)

    they gave us a concentration of 0.157, was our answer supposed to be higher or lower than that?
  7. H

    CHEMISTRY V1 DISCUSSION!

    I believe that since it was a crystal you have should of wrote diffrence in solubility as some crystals require up to 1000 degrees to melt
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    Chemistry Paper 6 - Important notes and repeated questions.

    Transition metal ion
  9. H

    Chemistry Paper 6 - Important notes and repeated questions.

    Thank You! I also have some information of my own (sorry if you have already posted it, didnt read the full thing) 1- If you use a spatula to transfer substance X, then X is a solid. 2- If we add solid X to a solution and rapid effervescence occurs, then X acts as a catalyst. 3- all acidic...
  10. H

    chemistry paper 6 topics???!!

    Apparatus Names. taking reading off of some apparatus (time, temperature...) rate of reaction graph plotting Mistakes in a shown experiment ( for instance, wrong position of collecting tube, or wrong connection of apparatus) Electrolysis formation of salts (by neutralization, titration or...
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