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patrick1996

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  • Gender
    Male
  • Exams
    May 2014
  • Country
    Canada
  1. It's pretty much impossible to get a zero; even a solid structure with a clear thesis and some accurate knowledge can gain you like 5-7 points easily I have no knowledge about that subject since I didn't study it, but hey, if half the information in the essay is correct you could gain some points obviously, but you may be held back in the fact that you "misinterpreted" the question; although you didn't really misinterpret it, you just talked about the wrong thing (possibly out of context?). Don't stress about It I would say; I'm sure your other essays can maybe make up for it
  2. patrick1996

    Biology HL TZ1 Paper 3

    Lol i know!! We did those options mostly 'cause it fits in with some of the core stuff. Haha, same here! I was hoping there wouldn't be any Hemoglobin oxygen curves and explaining them I was confused with why the bird song was 6 marks Ahh i hated the rat question!!! What was with all those extra rat groups? Unnecessary info much I think the bird song question will be rather broad in the mark scheme, I was really surprised to see it be assigned 6 marks too. I scrawled down a whole page of information hoping I hit on enough points! These data based questions were actually some of the worst I've ever done; they were so weird, and yeah those rat groups threw me off tbh All hail the IB for knowing how to piss students off... losing marks on silly data base questions that make up like 1/3 of the exam Hopefully :/ and yeah so did I, but idk the syllabus didn't go too in-depth with it, I just talked about how some of it is innate, patially learned, mimicked by other birds, mimicked from mobile phones, etc. LOL I was confused with heart rate and blood pressure, like doesn't pressure decrease if your heart rate decreases? What did you put for the last question in the bees data one? I was reaching on that one... Basically I said that perhaps the bees only collect enough nectar to feed the colony and food consumption could change from day to day. Also, the bees could have been having to travel further, since the bees "collection rate" was being determined by the time it took for them to go out and come back and the amount of nectar they collected. I also said weather could have had a factor on their collecting rate . It was so bull**** lol Also are you talking about the ventilation one or still the data base with the hear rate and blood pressure? In the ventilation one I talked about the chemosensors in the aorta/carotid arteries detecting the change in the pH of the blood due to the increased CO2 concentration that transmit messages to the breathing center to increase the ventilation. If you are talking about the rat one, I honestly didn't know what I was writing for that cold water/warm water one; I talked about how when your body is colder the heart has to increase in heart rate to pump warm blood to colder extremities faster... literally DO NOT KNOW haha. And year, I would think that heart rate decreases when pressure decreases o.O
  3. patrick1996

    Biology HL TZ1 Paper 3

    Lol i know!! We did those options mostly 'cause it fits in with some of the core stuff. Haha, same here! I was hoping there wouldn't be any Hemoglobin oxygen curves and explaining them I was confused with why the bird song was 6 marks Ahh i hated the rat question!!! What was with all those extra rat groups? Unnecessary info much I think the bird song question will be rather broad in the mark scheme, I was really surprised to see it be assigned 6 marks too. I scrawled down a whole page of information hoping I hit on enough points! These data based questions were actually some of the worst I've ever done; they were so weird, and yeah those rat groups threw me off tbh All hail the IB for knowing how to piss students off... losing marks on silly data base questions that make up like 1/3 of the exam
  4. patrick1996

    Biology HL TZ1 Paper 3

    This paper was a dream! I did option H and E as well , everything I didn't manage to cram in wasn't on the paper.. I was screaming internally. The data base questions definitely weren't as easy as some other years, like those damn rats.
  5. patrick1996

    Biology HL TZ1 Paper 1 & 2

    I put those same answers to those questions too and yes, it was the interstitial cells (aka Leydvig cells) and yes they produce testosterone Yep, loop of Henle.
  6. patrick1996

    Biology HL TZ1 Paper 1 & 2

    Q1: I put anywhere within the axon. I asked a few people and they said this as well, but I am not entirely positive! Since all of answers had only one option except for the answer that said "all of them", I leaned towards it because I was fairly sure it passed through the entire axon! Q2: I put maltose, amylase breaks down starch into maltose and the maltose is then carried to the embryo Q3: I am fairly certain this was tertiary structure; since it was referring to the 3D structure of one polypeptide (which is due to the bonds that form between the R groups of the individual amino acids), this still applies to tertiary structure, it's quaternary structure that is multiple polypeptide chains. Q4: Got this wrong lol.
  7. patrick1996

    Biology HL TZ1 Paper 1 & 2

    Q: Stem Cells My Answer: I said that they can be transferred between organisms. I honestly didn't really know whether to pick that or the fact that they reproduce, all I remembered was that they have the ability to divide endlessly I was caught up on the word reproduce, since they don't really reproduce they replicate themselves by dividing. No clue. Q:Q: After one phase of meiosis of a diploid animal cell, what are the products? (doubting whether this was even a question.. cant remember) A: I can't remember what the exact answer I put was, but it was the one with chromosome number: n instead of 2n and the cells produced being 2. I don't think the answer talked about haploid/diploid! Q: "Overall" products of glycolysis A: 2 pyruvate, 2 ATP, 2 NADH is what I put as well to compensate for the 2 ATP lost through phosphorylation. Q: Stem Cell A: There are unlimited stem cells in adult tissues, and I think it is the answer as I checked it in my textbook Q: Meiosis A: 2 cells with n chromosomes, so 2 haploid cells I guess Q: Overall product A: 2 ATP, 2 NADH, 2 pyruvate I was leaning towards that but then I remembered reading this from Bio Ninja, which gave me the impression that adult tissues had a limited/minimal supply (I have no idea if this is correct ). This question should have been simple but the answers were somewhat confusing 2.1.10 Outline one therapeutic use of stem cells Stem cells can be derived from embryos or the placenta / umbilical cord of the mother; also minimal amounts can be harvested from some adult tissue Stem cells can be used to replace damaged or diseased cells with healthy, functioning ones
  8. patrick1996

    I cant write a good lab report

    Hi, What I found to be really important when I was completing my IA labs was to be as thorough as possible; on my first few labs, I would always be scoring half of the points (3/6) in each section just due to stupid mistakes. You really have to focus and read the rubric very carefully, because my teachers were very stingy in awarding full marks (6) even if you made the slightest of errors. What really helped was that my teachers in both Biology HL and Chem SL provided us with a solid breakdown of the rubric, outlining exactly what we had to do to bring our labs to the next level. Has your teacher/teachers given you anything like this? If not, they are all over the place online, although there is probably slight variation between them. Also, reading over your labs multiple times is essential to scoring well: For DCP, make sure you check the number of digits in every number correspond to the uncertainty and that all calculations are done correctly. This is extremely important as these are easy marks that people often lose just due to silly mistakes. Also, ask yourself if the range of calculations that you have done are sufficient, and relevant enough to answer your hypothesis: for instance, it's not enough to just calculate the range and standard deviation of your data: IB (and your teachers) are looking for you to use this data that you collect extensively: make graphs (I tried to do at least 2 per DCP lab if applicable: again make sure you don't lose silly marks for uncertainties/not labeling axes/not drawing a line of best fit), and tables which are able to present your data in an elegant and efficient way. For design, try not to go for something too generic as these labs will sometimes be marked down because of this. It's hard to find a lab that is completely original, but taking aspects from different labs (such as measuring techniques, etc...) and then if possible adding your own flare is important in a design lab. Make sure you cover your bases well in your control variables, listing as many as possible. It is very easy to get a 1/2 in design if you choose to list only a few variables. Step back and think how these variables are going to affect your lab, and also make sure you investigate all possible control variables (even things such as room temperature, etc...). I think that materials/methods are pretty easy to score well in if you pay close attention to detail. I always found concluding the easiest: relate everything back to what you set out to do, talk about graphs, any anomalies in your data, and what made this lab successful/ unsuccessful; they aren't looking for perfection, but are looking for students to critically analyse data/procedure. If something goes wrong, explain why it went wrong, and how you can go about fixing it if you repeat the procedure. Again, make sure you cover all of the possible errors in the lab that you can think of; its easy to score 1/2 if you don't cover your bases. Hope this helps somewhat! I promise they will get better if you put the effort into them
  9. patrick1996

    Biology HL TZ1 Paper 1 & 2

    Q: Stem Cells My Answer: I said that they can be transferred between organisms. I honestly didn't really know whether to pick that or the fact that they reproduce, all I remembered was that they have the ability to divide endlessly I was caught up on the word reproduce, since they don't really reproduce they replicate themselves by dividing. No clue. Q:Q: After one phase of meiosis of a diploid animal cell, what are the products? (doubting whether this was even a question.. cant remember) A: I can't remember what the exact answer I put was, but it was the one with chromosome number: n instead of 2n and the cells produced being 2. I don't think the answer talked about haploid/diploid! Q: "Overall" products of glycolysis A: 2 pyruvate, 2 ATP, 2 NADH is what I put as well to compensate for the 2 ATP lost through phosphorylation.
  10. patrick1996

    Biology HL TZ1 Paper 1 & 2

    What did you guys put for the food chain question on P1? I said it was both a secondary and tertiary consumer and hoped I was right because I barely studied ecology..
  11. patrick1996

    Biology HL TZ1 Paper 1 & 2

    Yes, nucleosomes regulate transcription
  12. patrick1996

    Biology HL TZ1 Paper 1 & 2

    I know for sure I got that one wrong ! I didn't really understand what it was asking and didn't really understand the picture that was given so I guessed all three... I think some people in my class said just replication, although I heard replication and transcription from a few people as well.
  13. patrick1996

    Biology HL TZ1 Paper 1 & 2

    I believe it was ruler mag/scale mag, which gave something like 64mm/400 or whatever the magnification was for the actual size, and +/- 0.0025 for the uncertainty...at least I hope that's right lol That's what I did as well (except I measured 65 mm oh well ). I believe I expressed it in both mm and micrometers because they didn't really specify how to express it, and I'm so used to expressing actual size in terms of micrometers... hopefully they don't ding me
  14. patrick1996

    Biology HL TZ1 Paper 1 & 2

    I put emergent properties, hopefully that was correct because that was the only thing I remembered seeing in the outcomes and it seemed to fit Also in response to your other question I believe it was the germinal epithelial cells, as it pointed to the very outer area of the seminpherous tubule. The other arrow pointed to the interstitial cells.
  15. patrick1996

    Biology HL TZ1 Paper 1 & 2

    As long as you explained the synaptic transmission well I can't imagine that will cost you too much Also yeah I remember that question, I knew the order but it was easy to be tricked (#17)
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