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Exams

Found 18 results

  1. I want to do Biology EE on comparing the Chinese diet and the Mediterranean diet, but I don't know how to make an proper research question for that. Can anyone help me? Thanks
  2. Does anyone have a full and detailed list of how to format an Extended Essay for Biology? Also, I heard it was hard to get an A on a Biology EE, is this true, and why?
  3. So my topic I was looking at was the effect of temperature (I may change this factor) on the growth of bacteria (at least 3 different types of bacteria) and comparing these temperatures by using a spectrophotometer to determine optical density so that I am able to construct a growth curve for the varying bacteria at different temps. I was wondering whether this topic was extensive enough for the EE and if anyone had done anything similar in that is this the most efficient and accurate way of monitoring the growth of bacteria with quantitative values. Thank you so much, any advice is appreciate
  4. Hey guys! I hope you can help me out. (If you dont wanna read the back-story, just go to the ***) So our first draft for the EE is due tomorrow, and I'm done with it! YAY However, the word count is WAAAY beyond 4000! I did an EE in biology which was generally about caffeine and its effects on reflexes; for that I did an experiment, got data, analyzed it and discussed the results... like you would do in any other science research paper. Once done, I looked at my word count...... it was 8,314 So I read the IB guideline about what is included and what is not included i
  5. Research question: To what extent are natural Chinese herbal remedies (antibiotics) effective in reducing the growth of bacterial organisms [e.g. Escherichia Coli]? I'm looking for a method i could use for my experiment? I was initially thinking about using agar jelly or something, I literally don't know what to do. PLEASE HELP
  6. Hello all, (Sorry if I'm doing something wrong here. I'm kinda new.) I'm doing my extended essay in Biology. It involves changes to the hamsters' sleep-wake cycle as an independent variable. However, I'm not sure of the extent to which I can disturb the sleep patterns of hamsters without going against the animal experimentation policy/seeing a fall in my EE grade. Obviously I'm not going to keep the hamster awake for 24 hours. But is a little sleep deprivation (say, 1 or 2 hours) passable? How about just a mere shift in their sleep cycle (say, they sleep and wake up 1-2 hours later than
  7. I have to come up with a biology EE, but I am stuck with what topic research questions to choose from. I was going to do my topic on the effects of sleep deprivation on cognitive skills and reaction time on humans over the interval of a day, but there are so many things to take into consideration including the activities that they have done or their diet. So if anyone has any ideas for a topic regarding plants, or even something about humans(it must be easy to control the variables), then it would be much appreciated.
  8. Hello, I have to submit my topic and design for my biology extended essay by this Friday (tomorrow! ), and I have a topic and rough idea of what I would like to do, though I was wondering if I can get some advice and guidance for which way to take my experimenting. (an answer asap would be much appreciated ! ) So my topic is within the plant sciences and my research question is How does exposure to vibration and sound affect the growth rate of Raphanus sativus L.? *(Should I measure the growth rate, or the germination rate? would either be fine? and if they are, what would be the best w
  9. Hi everyone. I'm in year 2 of the IB diploma and have been freaking out about my extended essay. I'm doing my EE in biology and every time i seem to get closer to starting my experiment, I realized that my topic isn't good enough (has already been done, won't lead me anywhere..etc). Until very recently, my topic was on the effect of different sugars (glucose, fructose, sucrose) on the rate of fermentation in yeast. Today, however, I realized (through some extensive research) that about everything that has to do with yeast has been previously tested and done. Now my problem is that I've go
  10. Hello there, I am struggling to come up possible EE topics for Biology. I really want to refrain from using plants because everyone is using them. (Unless it is something really creative and original). Simple words of advice or even a potential topic/experiment will be helpful. Also, perhaps a link, or book that will help me out would be greatly appreciated. I would really like to get an A on this essay; want to get the first biology A in the school. Thanks a bunch!
  11. I'm frantically trying to search for a human biology based RQ and my teacher said that the IB does not want us to use Bodily Fluids (I was going to do something with a urine-based experiment), can anyone help me out by letting me know how certain this is and what are the specific restrictions. Are we allowed to use blood? I need to know all the banned topics/experiments in Biology that are not included in the IB guide so that I can find a valid RQ.
  12. Hello! I have question about my biology EE (prev. topic here, i didn't want to add these question there also as it's old + this question is about what to do with my data) and at the moment I don’t know what to do with my data now: what graph should I use. So briefly I have measured how the cows heart rate changes when grooming (first I measured the rate, then groomed, then measured again, groomed again, and measured again). In my experiment I have two subgroups; heifers and cows, and in one subgroup is five animals. I repeated this experiment five times for one animal. Now I have justcalculat
  13. Hello everyone! I'm doing my EE on biology, and it's going to be animal experiment. My topic is ''effect of grooming on cows'' and basically my plan is to groom cow and measure the heart rate before and after the grooming --> does it change and how. I've couple of questions considering my topic + I've some other questions, and I would really be happy if someone who knows more than me could answer for me:) 1. First of all, I have read all the animal ethical infos, but I still want to make sure that is this topic acceptable? It doesn't cause any stress on cows, as I know that they like groomi
  14. I have decided that I wanted to do my extended essay on biology because it is the subject that interests me the most. I do have a mentor that has agreed to work with me if I can come up with a topic on my own. I have come up with two topics: The first one involves growing bacteria and im not sure if i could do it because my school does not have a centrifuge and I'm just wondering if it would still be possible to test the effect of things on the effect of bacteria if I dont have a centrifuge to count the number of cells. The second idea I have has something to do with the sugar level of senio
  15. Hello, my name is Jasmine Gomez, and I live in Alabama and go to an IB high school, obviously... Anyway, I want to become a vet and because of this, I chose HL Bio and SL Chem., instead of the other way around. In addition, I want to do a Bio. EE, which I know is a touch more difficult than, say, a history or english EE. Now, I am a vegan, and am interested by the fact that animal proteins supply a thriving environment for cancer and other diseases to flourish in the body, versus plant proteins. Therefore, I would like to do something concerning (vaguely/in general) this subject matter; howeve
  16. Hi, Just wondering if anyone knows about markers preference to case studies and experiments in science EEs? I am doing mine in biology and I came up with the idea of 'The effect of polyphasic and biphasic sleeping patterns on concentration'. When I presented this to my supervisor I was told that this is a good idea, but would only be limited to a case study due to time limitations [and other limitations] of trials. Other people in my year believe that case studies will score a B grade and less but never an A grade. Is this true?
  17. Hello, I am trying to find a suitable and easy topic and experiment for Biology EE. I have come up with this - Testing the effect of stretching on aerobic and anaerobic exercises using heart rates - maybe between males and females - of different age groups ? My concern is that this topic maybe has already been explored or similar ones to this exist already ?? Please help !
  18. That's what I'm thinking to myself. I have to propose a research question Tuesday for my EE. But here's the thing, I need two different subjects. Now I'm all set on one, just need a second topic. Now I'm really into the whole bacteria thing or even DNA..being realistic though, I'll stick with bacteria. Now I've done a practice IA on bacteria growth within my school, but I would love to expand that further do something pretty cool. Any ideas? Help me, please. ):
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