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Found 772 results

  1. Allemande135

    Nature of Science

    What is Nature of Science? It seems like the IB is beginning to ask more and more questions on it in the exams. Is there anything that I need to know or understand for it? I know that you can just use some common sense and logic to answer these types of questions, but is there any way to prepare?
  2. Dear associates, I need your help. My Extended Essay subjects & topic are due soon, but I am struggling with the choice. I am determined to study medicine after graduating, and thus I want my EE to be relevant. However, when it comes to related sciences, Biology and Chemistry, teachers in my school strongly advise against them, claiming that students get the lowest grades for these subjects. I am interested in them but not much competent in either Bio or Chem, as I picked them only a month ago (this is another story 😂). Those of you who are experienced in the sciences or anyone willing to help, please give me your advice! Is it true that it is nearly impossible to get a high mark (A or B) in EE in experimental sciences? Do I better choose an interdisciplinary subject? Could you probably share some thoughts about medicine-related topics in EE? I would be genuinely grateful for any reply 😊
  3. goldenchimmie

    Option D : Nutrition

    Note for D1 - Nutrition!
  4. Pascal

    Full ESS Summary

    Hi!! This is my second year of IB and in order to study ESS more efficiently, I made a summary of the whole book. Let me know if you want it
  5. TeachersworsethanIB2019

    URGENT: IB BIOLOGY preparation for

    I hope I get a response that may aid my situation, but please take time for this 5 minute - read and read the whole thing, and please bear with me as I give you some background knowledge over my case, as I need all the help that I could get at this stage. So over the past 2 years (2018 & 2019) of IB I've dealt with 3 different teachers, obviously with different expertise, who taught me IB Biology higher lever (HL). Unfortunately the first teacher in my first year (2018) of the dp programme was of very low expertise. The teacher demanded we abide by the notes he compiled, which were incomplete and lacked important information. However, bing we were new to the dp programme and completely trusted our teacher to get us to a level 7 in biology, we followed his demand. Keeping in mind that all throughout the 1st year (2018) we were examined based on these horrible notes with questions that in no way shape or form are close to the ib past papers' questions. Those were the topics he taught us (keeping in mind the lack of detail and incompleted topics): ▪1 (cells) ▪2 (molecular bio) ▪1/2 of 6 (human physiology) ▪1/2 of 7 (DNA) The 2nd year (2019) comes he leaves but another teacher comes also demanding we study from her notes, except they were way better at least. To discover that after two months this teacher also leaves without notice. Those were the topics she taught us: ▪11 (animal physiology) ▪9.1 and 9.2 only, from topic 9 (plant biology). Following that comes another teacher who I'm thankful for her great expertise. The issue was that she was tight in time in terms of having to teach us the following topics: ▪ 3 (genetics) ▪ 4 (ecology) ▪ 5 (evolution) ▪ 6 (human physio) (the rest of it) ▪ 7 (DNA) (the rest of it) ▪ 8 (metabolism / respiration / photosynthesis) ▪ 9 (plant biology) (the rest of it) ▪ 10 (genetics and evolution) ▪ Option (D: nutrition) Where topic 8 (metabolism / respiration / photosynthesis) WAS NEVER COVERED. Also, because she was tight in time, she had to finish the following topics during a MONTH only: 2 (parts of it) + 6 + 7 + Option D. Therefore I have only studied from the "Andrew Alott Oxford Biology" course book the following topics: 3 + 10 + 4 + 9 + 11. And the rest of these topics, being: 1 + 5 + 6 + 7 + 8 + Option D I have never studied well from the "Andrew Alott, Oxford Biology" course book yet. Thus what would you suggest I do for the mocks in 20th of March as well as the externals in may 2019 (biology exam p1 & p1 specifically on 09/05/19? Would i be able to get a 7 in biology HL by only studying from the STUDY GUIDE by "Andrew Alott, Oxford Biology" as well as solving past papers, OR do I have to study from the "Andrew Alott, Oxford Biology" course book to get a 7. Or should I study what I can from the "Andrew Alott, Oxford Biology" COURSE BOOK for the MOCK EXAM (P1 + P2 + P3) in 20/03/19 regardless of what mark I get, so that by the time the externals come about I wold have studied the entire COURSE BOOK in order to get a 7 in biology HL in the externals (at least, if not in the mocks as well)? TO BE ABLE TO ANSWER THE QUESTION ABOVE KEEP IN MIND THE FOLLOWING: ● MOCK EXAMS START: 20/03/19 ● MOCK EXAMS END: 15/04/19 ● DURATION TILL BIOLOGY EXTERNAL EXAM: 24 days *keeping in mind that I have OTHER SUBJECTS prior to the biology exam of which I have to study for the externals. Below are the subjects I take along with each is its external exam date. My Subjects and their External exam dates: ● BUSINESS (SL) P1: 03/05/19 / P2: 06/05/19 ● ARABIC (A, SL) P1: 06/05/19 / P2: 07/05/19 ● BIOLOGY (HL) P1 + P2: 09/05/19 / P3: 10 /05/19 ● MATH (SL) P1: 13/05/19 / P2: 14/05/19 ● ENGLISH (B, SL) P1: 16/05/19 / P2: 17/05/19 ● DT (HL) P1 + P2: 20/05/19 / P3: 21/05/19 *Here is the study guide if you want to take a look at it to be able to answer me: Study Guide by "Andrew Alott, Oxford Biology": https://drive.google.com/drive/mobile/folders/1Wph6zPTQBP_t_p4wx5aFlezafbHyTE-d/1MJRMpQRykUEQyFdInKvHKLQCZmii12ao/1x8PpP70oN1rIquvjUbtEQvFY610Va_jm?usp=sharing&sort=13&direction=a Course companion / course book / text boom image: by "Andrew Alott, Oxford Biology": https://www.google.com/search?q=andrew+allott+biology+course+companion&client=ms-android-samsung&source=android-browser&prmd=inv&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiG5qLMjYfhAhWR16QKHQa_DdsQ_AUoAXoECAwQAQ&biw=360&bih=616#imgrc=uROuNYVVoEAzMM An immediate sufficient response would be extremely appreciated to a fellow ib student in GREAT NEED! Thank you in advance!
  6. LazinessElemental

    Requesting Biology IA Tips

    Hey folks. My Biology IA has been quite a roller-coaster ride. I've been through 3 failed topics, and have currently finally settled for this mediocre secondary research topic. I am analyzing the correlation between AIDS Incidence/Death cases in my country and its Human Development Index (HDI) values over a certain period of time. Changing the topic at this point is not possible, and I have around 17 days till my school samples and uploads IAs to the IB. At this point, I seek any sources of advice to stay on the safe side of things. I would really, really appreciate any tips whatsoever on making my IA on this topic better! I just need passing to decent grades in the IA as I am confident I can handle the exam in May very well. Time is running out and boy is the deadline too close for comfort. Thanks!
  7. EllaS02

    How can I prepare for IB?

    I'm currently on my summer break, and will be starting IB next year. I feel mostly prepared, but I will be taking two new subjects that I'm unfamiliar with: Economics and Biology. I currently have my Biology study guide and my Economics one is on the way. Does anyone have any advice on what I should study from these that will give me a head-start for IB?
  8. cherietse

    Topic 1.1

    Topic 1.1 Notes
  9. I submitted my Bio IA in the first week of December and accidentally reopened it today, only to realize that I'd typed my name in it. I know that IAs aren't supposed to have names on them... what do I do?? Will I be penalized??
  10. ibsurvivingnew

    Biology IA

    For my IA i need to test the levels of photosynthesis in plants through chromatography. Does anyone know what chemicals and material I'll need ?????
  11. mgk583

    SELLING IB TEXTBOOKS!

    I am interested in selling a number of my IB books (many of which have never been opened or used, although some have plastic contact on them)! I took my exams in November 2018 so these were the books that were suited for my year and possibly for future years to come! - Edible English 4th Ed. [BRAND NEW] = $20 - Biology Study Guide Oxford (2014 ed.) [BRAND NEW] = $70 - Biology Course Companion Oxford (2014 ed.) [BRAND NEW] = $45 - SL Maths for the IB Diploma Haese 3rd Ed. [BRAND NEW] = $70 - TOK 2013 Ed. Oxford [BRAND NEW] = $50 - Extended Essay Oxford Course Companion = $40 - Economics in a Nutshell Exam Study Guide Tragakes = $40 I would prefer to only send stuff to Australia but if you are from elsewhere just let me know! Thank you and good luck with your IB studies!
  12. Hey So for my Bio IA I conducted a T-Test and I got a value of 0.08, which is HUGE. All the times I've done T-Tests I've gotten values less than 0.05 that allowed me to say that my values were statistically significant, but now I'm worried. Should I not include the T-Test in my IA?
  13. Sope

    URGENT BIO IA HELP

    I'd asked my Bio teacher if I could do my IA on the effect of music on plant growth and at the time she'd said yes, but after I submitted my information sheet she said that it was an idea with a shaky foundation and that I need to turn in a new idea ASAP. Please help!!! I was thinking something along the lines of photosynthesis..... I don't know, I'm just really confused right now. Is there anything I can do that's relatively simple but not like, utter trash?
  14. Hello! I'm doing my extended essay on plant growth, but I only have 3 trials from my experimenting. I was told that theres hardly any statistical analysis that i can do without more than 5 trials, aside from calculating the mean, and I have no idea where to go with my data. I was planning on a lab based EE from primary data, but I'm not sure if thats possible anymore seeing as I dont have enough trials for in depth statistical analysis. Should I run more trials, or should I change direction with my EE and use my primary data to support secondary data, turning it into a research based essay instead of experimental?? Please help!! - Thanks, Cherry
  15. brooklynbaly

    Bio IA topic help

    Hello, I have several ideas for my Bio IA, but I am not sure how well any of them actually are and if I could get a high mark on them or not. They are: 1) How do different concentrations of orlistat affect the activity of the enzyme lipase on the substrate butter as measured by……….? Here I am not sure how to measure the activity of the enzyme lipase. Any ideas? 2) How do different concentrations of the inhibitor (?) impact the enzyme lactase and its’ ability to break down lactose as measured by the glucose concentration of the remaining substance? Do any of you know about any inhibitors to lactase? If not any other ideas to make this question more unique would be great. Also what way is best to measure glucose concentration of lactase activity. I was thinking glucose strips but I am not sure. 3) How do different concentrations of copper (II) sulphate affect the activity of the enzyme catalase derived from bananas (maybe liver) on the substrate hydrogen peroxide as measured by……(it’s decomposition??)? Any ideas on how to measure the decomposition of hydrogen peroxide would be great. I know of a few but I am not sure my school has the equipment. Also is this an overdone idea?
  16. pettewaylily

    Biology??

    Hello everyone! I'm going into the 10th grade this year, and am planning on doing the IB program 11th-12th grade. In the future I am hoping to be a pediatrician, so I was looking online for what IB classes you should take in order for medical school. Most sites said Biology and Chemistry HL. I like chemistry a lot and am hoping to HL in that, but I'm not so sure about biology. So, first of all, would HL biology be necessary for medical school? Also, if I did do HL bio, would it be important to take biology this year too? (Pre-IB) I'm currently signed up to do physics, and I did biology in 8th grade, but I've heard that HL bio is really difficult so I'm wondering if I should take up biology this year to be prepared for when I do IB. Also, considering I want to be a pediatrician, I'm unsure whether physics is actually important or if I should just do biology instead. Thank you!
  17. France7070

    BIOLOGY EE / WORLD STUDIES EE

    Hi there, I am struggling to come up with a topic for my extended essay. I have a marine aquarium and I really wanted to do it on something relating to that. I am currently thinking that maybe a biology one about the symbiotic relationship between coral and zooxanthellae bacteria but am unsure how to word the question. Also thought maybe a world studies on chemistry and ESS about the relationship between calcium and alkalinity (they precipitate each other) and how this effects reef formations. I am open to ANY suggestions whatsoever so please don't hesitate to throw any ideas at me! thanks so much guys!
  18. It is for my IA Bio HL.. preferably the method is way cheaper and easier and not depending on human senses..
  19. Hi Everyone ! i misunderstood the standard level bio IA instructions for the amount of data points. It turns out you are just supposed to do 250 data points for each variable. i have 5 variables of course, and my ia is testing the length of grass seeds in different vitamin-soil mixtures. so I misunderstood everything and I did 250 data points for each variable, so all together I have a 1,000 data points. For example I tested Vitamin C, in 5 trials, with 50 data points per trial. So all together 250 points for one variable. The 50 points per trial were measuring the length of 50 grass seeds. now my teacher isn’t replying. I did all my data, and processed data like standard deviation and averages. please help. I have no idea what to do. I put all the raw data in the appendix. And all the processed data (averages of each trial) I put in the actual lab report. what should I do ? I’m not going to go over the 12 page limit. Can graders penalize me ??
  20. sukanta

    Checklist for Biology IA-HL

    This is a handy checklist to use while writing your Bio HL IA. It has all those small detail that you may easily gain marks from putting in your IA.
  21. keeley45733

    Bio, Chem or Physics

    Going into jr year and class choices are due in a few weeks, please respond and thank you in advance to the ppl that do What sciences should I take and at what level if I wanna go into engineering or medical. Like what would be the best base for college? Also at what level should I take math? ^ 2 HL spots and 1 SL
  22. Primkit

    HL biology notes on topic 3 & 10

    These are just some notes that I made to prepare for my end of year exams. It's missing linkage but everything else should be there!
  23. Guest

    Failed IB experiment

    Long story short, I did a bio extended essay, messed up the experiment, instead of isolated colonies I got a single weird blob. No data collected. Failed the experiment. Am I allowed to use external data to support my arguments?
  24. Prabhjyot_S

    Grade 10 Science ~~ Biology Notes

    Grade 10 bio notes for beginners.
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