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slimshady

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  • Gender
    Female
  • Exams
    May 2015
  • Country
    Spain
  1. Abou inorganic and organic catalyst i know that they speed up the reaction both and that they both lower the acivation energy. the difference is that the enzyme is denaturated over high temperatures and inorganic catalyst can work in high temperatures with no problem and that the catalyst is specific for some substraes and inorganic catalyst is not. but there were many different comparisons still. about DNA strand I didnt know what to write so i just wrote about phosphate pentose and nitogenous base and what bonds link them, thats all and that the phosphate group of one nucleotide is bonded covalently to C3 of pentose sugar of the other nucleotide, how the strand work. I dont remeber the question about enzyme...
  2. I suppose it ask the function of these type of hormones What do you mean these types of hormones? They asked what is the main function of these two hormones in the body. I must have misunderstood the question, because I thought they asked to describe the main function of progesterone OR testosterone. I remember the word "or" because I even underlined it, but maybe the question refered to both of them, damn it! or maybe they have asked only for the one of them... I am not sure now... was it for 1 or 2 points? 1 point and what did you write about the question of nurtients deficiency? i dont remember what was exactly the question about but i remember i put genetically modify food and i wanted add ' add nutritional supplement' but this was given in the statement above the question so i was confused...
  3. I suppose it ask the function of these type of hormones What do you mean these types of hormones? They asked what is the main function of these two hormones in the body. I must have misunderstood the question, because I thought they asked to describe the main function of progesterone OR testosterone. I remember the word "or" because I even underlined it, but maybe the question refered to both of them, damn it! or maybe they have asked only for the one of them... I am not sure now... was it for 1 or 2 points?
  4. What did you guys write on the question 1 in section B tz2? i think it was the question about how the amino acid is prepared for the chromatography or something like that?
  5. I suppose it ask the function of these type of hormones What do you mean these types of hormones? They asked what is the main function of these two hormones in the body.
  6. Well delta T i got 5.6 and my friends got like 5.2 or 5.0 or 5.4 so I hope that there will be a wide range for the answer....
  7. the same here What Did you get as the concentration? sorry I don't remember :/ I only remember that i got near 19% percentage error and that the enthalpy was near 47. I gues that I have that wrong.
  8. What did you all write for q1 in option B? It was the question about chromatography and I think it was someting about how the amino acid is prepared for chromatography? I wrote that the protein by the use of HCl is separated into amino acids... but i know it is wrong ...
  9. what did you got for the number of mol in the 1st question in paper 2 tz2?
  10. about the source of error in the 1st question, it couldn't be lost of heat, I guess that it was that the student used a glass beaker to measure the solutions (as it was written in the text) so I wrote that the improvement might be using the graduated cylinder instead of glass beaker, I am suprised that you have written lose of heat like all of my friends wrote glass beaker
  11. I said the same thing. 107 for one and <120 and<180 for the other one.both had a lone pair. What did you writr for the question were they asked about the covalent bond between hydrogen and carbon? So the bond angles for the seesaw should be more than 180 so 186 because of the pair of lone electrons that has extra repulsion, less then 120, so 116 and exactly 90 so 186,116 and 90. I was blessed with this question as I wrote all of the shapes and bond angles on paper night before the exam and memorised I think that Pearson's HL book is great for learning bonding cuz in Study Guide they do not pay attention to shapes and bond angles.
  12. Yes, in my classes we always do 5 runs but if your teacher said that three is enough I think go for it. In biology classes we once did only 1 trial hahaha so the report/DCP was realy lame ;p
  13. Hi! I need some help with my EE topic. Till this Monday we have the deadline and we have to give our EE topics and research questions. I have got a big problem because I chose Life of Pi as my book and I completely do not know about what problem/topic choose and what might be a research question. Could you help me with it?
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