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suggaplum

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suggaplum last won the day on May 16 2011

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    May 2011
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  1. suggaplum

    Biology SL/HL help

    Was this taken from an IB exam and was it correctly quoted? If yes, it is one of the most unclear questions ever posed. Why they would not add "which is homozygous" to alternative D confuses me. I don't think this is taken from an IB exam, but I can't be certain. For D, it does not say if its homozygous or not since for phenotype t to be expressed, the genotype has to be tt homozygous therefore it does not have to be explicitly stated. As for the answer, it is C since it is a test cross and they are crossed with heterozygous individuals For the question, the answer from the markscheme states: Outline the role of the phloem in the active translocation of biochemicals. living tissue; composed of companion cells / sieve tube members; companion cells involved in ATP production; sucrose / amino acids / assimilate / products of photosynthesis transported; bi-directional transport; source / leaves to sink / fruits / roots / storage organs / named storage organ; pressure flow hypothesis / movement of water into phloem causes transport; Well, IB loves throwing in random questions and I personally think some questions are also not required in the syllabus so in my opinion, you should learn both "just in case". However, from the past papers I have, I haven't seen a section B question on this, so you can just roughly understand the idea however not in highly specific details No you don't, all you have to know are the features/characteristics & examples of the different species
  2. suggaplum

    Biology HL Paper 3 - TZ2

    Well, I personally don't like evolution since it is still so unknown and some of the answers are tentative, I like solid facts that I can learn etc. Heh, glad it was good though Well you're lucky you looked over cocaine, I didn't at all but I take chemistry medicine & drugs option so i sorta got the knowledge from there and made something sensible up. I hope I could at least get 4 marks >< Really? i haven't really seen the questions on heart rate, I wasn't expecting any questions from oxygen dissociation curves since it was in Nov 2010
  3. suggaplum

    Biology HL Paper 3 - TZ2

    Yeahyeah, its carbonic anhydrase. For the question on chemoreceptors, I wrote hypothalamus, carotid artery and the aorta. Im not sure if its the hypothalamus or the medulla oblongata though, I was unsure so i guessed Ohwell, its over and done with >) I thought the long questions were very unexpected though. Stomach ulcers and cocaine. How were the other options? Did anyone do evolution?
  4. suggaplum

    The Change One Letter Game

    Grape gape gap rap raw row crow cow caw cat scat seat heat beat beast yeast yeas year rear near sear smear swear sweat sweet sweep weep wep web wet yet yen yes yews Jews pews peas seas sets bets pets jets nets lets less mess fess fest feast beast yeast least last past part park perk pork work wok wonk conk coak cork cord core bore bare dare ware wore word ward bard yard hard card car cor cot
  5. suggaplum

    Chem SL Practice Exams

    Just simply find it online, you can search almost any paper on google (except the may 2011 of course), if your teacher's like mine who gave us past papers the week before the exam since he didn't finish teaching us 2 HL topics. You can type in the serial codes? of the paper in this format: year/subject group/subject/level.paper/language/timezone/XX(/M+ : for markscheme) for example may 2010 chemistry HL paper 2 M10/4/CHEMI/HP2/ENG/TZ2/XX Good luck!
  6. suggaplum

    Biology HL Paper 1&2 - TZ2

    Yeah, thats what I wrote as well, I also added the fact that it is active artificial immunity and what are vaccinations. Nine marks seems so much for a question like that though >< Did anyone include how antibodies are formed when an antigen is encountered? I was thinking of writing that, but I thought it didn't directly relate to vaccinations so I didn't, and examiners have hundreds of papers to mark so I thought i'd just keep my paper short and sweet
  7. suggaplum

    Biology HL Paper 3 - TZ2

    And yes. I thought it was rather dull that they had something like that. Everyone in my class did that option except me (I self-studied Option F instead because I really don't like neurobiology ), and my friend self-studied option H and found the chemosensors in the blood question odd, as well as the oxygen dissociation curve difficult. I self studied Option H since i didn't like ecology and I also thought the oxygen dissociation curve was quite an odd one. I wasn't sure what they wanted since they just said to describe the curve, so the best way was simply just to draw it I guess. I don't the behaviour part of Option E, however I LOVE the brain part I did the same options! I liked option E, but for option H, the H. pylori question was weird, I didn't really know what to say for 6 marks I thought both options were okay, H.pylori was alright for me however the stomach cancer part may have been a bit odd. As I said above, I thought the oxygen dissociation curve one was harder though
  8. Mandarin B, French B, German B and Spanish B. Haha, the most ordinary and normal ones all offered at both HL & SL. i would've really wanted to do Korean though ><
  9. suggaplum

    Biology HL Paper 3 - TZ2

    I did Option E - Neurobiology and Behaviour and Option H - Further Human Physiology Did anyone think it is odd how there was a complete 6 mark questions simply on cocaine and its social effects? I was expecting something on behaviour (which i frankly would not prefer).
  10. Economics commentaries are in aim of allowing students to apply economic theory into real life situations. So you have to find an article that is recent to talk about. First you define economic terminologies, however do it coherently and cohesively, not as a list of definitions. Then you summarise the main points of the article/event and what economic concepts are linked to the article. You then start your evaluation and from an economics perspective, how this arises, what are the consequences, how these issues can be solved. Basically it is an analysis in terms of economics. Diagrams are a must, additionally you have to also explain your diagrams and not treat it as a separate matter that sticks in the very end of your commentary. Diagrams should be clearly labelled. The word limit is 650-750, including all labels of diagrams Remember, an evaluation includes: - short-term & long-term consequences - impact to different stakeholders - prioritising the argument - advantages and disadvantages Good luck!
  11. suggaplum

    Biology HL Paper 1&2 - TZ2

    If i remember correctly, I think I put B.. if you still remember what the ansewr actually was. But sorry to say, definitely not uneven cytoplasm of sperms, that only applies to egg cells as there's only one egg that generates and the other are polar bodies. It is also not the fact that sperms have more chromosomes than the egg cell since they are both haploid cells.
  12. suggaplum

    Biology HL Paper 1&2 - TZ2

    Difference: Urea Concentration Similarity: Protein/Macromolecules concentration
  13. I thought some of the questions in the multiple choice was odd. Like the one where we had to state which cell was most like the leaf mesophyll layer. For paper 2, I thought the data response was alright but the structured factual recall was since there was ecology. For section B, I did questions 5 & 8.
  14. suggaplum

    Confessions of an IB student

    I asked my maths teacher to photocopy Paper 1 that I did this year, just to see if I can actually do it without any pressure, or did HL really mess with my head...
  15. suggaplum

    This or That!

    DOGS! golden retrievers dusk or dawn?
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