Biology and ESS
For Biology and Environmental Systems and Societies Discussions
1,489 topics in this forum
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So i'm about to begin Grade 11 of high school, in other words my first year of IB. After going through a number of posts about Study Guides, etc. it really left me confused on the topic of: should I be buying these study guides for Chem and Bio now or in my senior year? It is my goal to achieve 6 and 7's however I am unsure of whether these Bio and Chem study guides would serve any purpose or use to me at this time. I am very new to the IB world and if someone could kindly help me out, or link me to a post where something like this is already talked about it would be much appreciated ! If there are any questions about my current situation I will gladly answer them…
Last reply by hersheythebar, -
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Are two people in the same batch allowed to have the same IA? Me and my friend didn't know it but we ended up doing the same thing. We did it in different ways, but we were researching the same IV and DV. How should we proceed? Who gets the IA?
Last reply by mechnight, -
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Im in currently in a distressing situation as my previous IA experiment failed on me halfway and now I desperately need new IA topic. I came up with the following: How does the length of a carbohydrate affect respiration in yeast? Basically I would take different types of sugars eg. glucose, fructose, maltose, sucrose etc. And use them as a source for yeast to respire with. I would then calculate the amount of carbon dioxide buildup Dependant: Volume of carbon dioxide released Independent : Type of sugar corresponding to carbohydrate chain. eg. glucose for monosaccharide, sucrose for disaccharide Questions: - Is this too simple an IA? Because essentially, I eith…
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I'm planning of doing my IA on different concentrations of 2 heavy metals, lead nitrate and copper sulfate on the rate of photosynthesis. This makes it 2 independent variables. This is my proposed RQ: How do different concentrations of lead nitrate affect the rate of photosynthesis in Cabomba Caroliniana, as measured by the number of bubbles, over the duration of one minute, compare to different concentrations of copper sulfate? All suggestions welcome, thanks!
Last reply by ibstudent77, -
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Is it fair that my teacher has marked me down from a complete to a partial for not stating the RANGE of my Independent Variables, in my research question? I stated the range of the IV's straight after in an "Information Section" but not directly in the RQ. I stated what my DV and IV's were, but not the specific range. e.g. Concentration of HCl (0.1, 0.2, 0.3) etc.... Is it fair that I got 1/2 instead of 2/2
Last reply by mechnight, -
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Hello everyone! As you read in the title, I am not sure which science to pick... I am not going to do anything related to science in uni, but as you know one science must be taken. My Subjects are: Maths HL, Econ HL, and etc. 1) which one to choose? 2) do you really have to study by heart all the definitions and human body related cells etc.? (I am not that good in memorising all the things) 3) is it simple to have an easy 6 or 7 in ess? Thank you for answering me
Last reply by WhitneyGrace, -
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Does anyone know where I can find the new ia rubric for biology??? It is really urgent!
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My current RQ is: How does light intensity affect the rate of photosynthesis as measured by number of bubbles produced by *name of aquatic plant* in conducive environment over a duration of one minute, and how does it compare to the rate of photosynthesis in a polluted environment? My teacher said I need to make it slightly shorter, how do I do this while still including 2 independent variables and the dependent variable in the RQ? All help appreciated, thanks!
Last reply by theswizzlerbruh, -
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I'm thinking of doing my IA on the effect of light intensity on the rate of photosynthesis in an aquatic plant. I'm planning on doing 5 different light intensities and using 2 types of surroundings, one in a normal environment, and one in an environment with cigarette smoke. This makes it 2 independent variables, light intensity and condition of environment. Am I allowed to design an experiment for my IA with 2 independent variables? Any input appreciated, thanks.
Last reply by theswizzlerbruh, -
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So I'm currently planning on doing an experiment that uses an aquatic plant, measuring the rate of photosynthesis with different light intensities. Dependent Variable: Number of bubbles produced (rate of photosynthesis) Independent Variable: Light intensities Is this too simple for me to score a high grade? All suggestions/improvements welcome!
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Ok, I'm taking ib environmental system instead of the other science classes...and many people in our school view it as a joke. So do universities view environmental system as an easy course or what.
Last reply by King112, -
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My IA is to investigate the effect of different leaf extracts on the germination and growth of seedlings Currently, I got two different kinds of extracts. Two different kinds of seeds I covered 8 petri dishes with cotton and placed six seeds of one kind in them. I then poured over the two leaf extracts on 4 petri dishes each. I did this for both seeds. Is this enough for data? Any help would be much appreciated.
Last reply by bguloglu, -
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Hi everyone! On the Biology guide, it stipulates that the IA must be 6-12 pages long. However, I'm not sure if that means that it's 6-12 sides of A4 long, or 6-12 pages, meaning there would be 12-24 sides of A4? Thank you!
Last reply by DuffsterCole, -
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So for my biology IA I will be doing something about germination ( independent variable - temperature ) and I just realized one of my classmate is doing her EE on germination as well ( independent variable - light wavelengths. ). In that case, can I still do the topic ?
Last reply by kevG, -
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Hi, So my BIO IA topic is ''How does light intensity affect the germination and growth of bean seeds?'' So the plan is to plant the seeds at 5 different light intensities (5 examples for each light intensity) and then analyse the results. My main concern is how I will go about regulating the light intensity. What do you guys think? What can I use? Grateful for replies!
Last reply by inshm2016, -
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If I use the product "pH Up and Down" 1 in my EE to change the pH of water, will this be viewed negatively by IB graders? Are they looking for students to manually alter pHs (eg through adding sulfur to lower pH)? 1: http://www.homedepot.com/p/Hydroponics-Organic-pH-Testing-and-Adjusting-Kit-VPTK4/202985176?MERCH=REC-_-nosearch2_rr-_-NA-_-202985176-_-N
Last reply by Purple Joystick, -
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Hello, I know it's maybe a little bit early, but I want to ensure that I have the past papers (Biology SL), when I want to start studying for the final exam. Unfortunately not every school has enough past papers, which the students could learn from... I would be pleased if anyone has past papers from the last ten years (2005-2015). I don't think that the curriculum changed much, moreover I could also skip a question if I realize that it's not in our curriculum. So if you have a link of a website or if you have them as soft copies, I would be glad if you could send them under this topic. I'm sure many students will benefit from this:) (I'm not a native speaker, so p…
Last reply by CkyBlue, -
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Hello! I am doing my mock exams and I was looking for the may and november 2014 paper 1 pastpapers for Environmental Systems and Societies (both timezones) and I haven't found may 2014 timezone 1, only 0. I was wondering if any of you had access to it and if you could share it with me! I would really really appreciate it as I am revising very hard to manage to get at least a 6 Please let me know! Thank you - A fellow stressed IB student
Last reply by Emmi, -
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Hi everyone! I was wondering if statistical analysis is necessary to score highly/get full marks in the Analysis criterion? I'm having a hard time trying to find an appropriate statistical test, or if it's even necessary or able to apply one. I'm aiming to find out which honey (out of 4 different types) have the highest efficacy as a bactericide, measured using the zone of inhibition. I know this is incredibly vague, but any help is much appreciated. Thank you!
Last reply by DuffsterCole, -
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HI guys, for my statistical analysis, I will be using the t-test. However, I am not sure if I should use the t-test equation to find the critical t value: or, use this online t-test calculator. The online t-test calculator would make things easier, and would also save word space, as I could just reference the calculator. But I am afraid that I will not get points for my understanding and the holistic judgement mark, since I just used a third-party resource. What do you guys think? Currently I am writing it down with the equations and comparing it to the t distribution table, but explaining this method might take up valuable word space, rather than a report from t…
Last reply by Oscarthecat3, -
How do I write a good ESS IA? My teacher has not given us any guide lines so I don't really know how it is suppose to look like. Any help is appreciated!
Last reply by Oscarthecat3, -
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Hi all, I am wondering if anyone has a fool-proof formula for writing a lab report hypothesis? I have seen different opinions from everywhere, but I am trying to create a detailed and proper hypothesis, that follows whatever the correct format is. thanks!
Last reply by kevG, -
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The research question : How does the light intensity affect the rate of photosynthesis ? Procedure : I am going to use leaf(money plant) discs, and remove all the air bubbles using a syringe, thus it will sink when put in any solution. Place them in the solution of bicarbonate in distilled water. Take different samples of these and place them with a distance of 30cm, 40cm, 50cm, 60cm and 70cm from a single light source one by one. And note down the time taken by all the 10 discs in the solution in one beaker to rise. Problem : I was ready with the set-up for the experiment. And had finished the experimenting the 30cm calculations. But my teacher said that this migh…
Last reply by ShootingStar16, -
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Hi! I've been having trouble coming up with a good biology IA topic. At first I thought I'd try to make an experiment to see how long it takes for cats to form a habit, but I only have five cats to use in the experiment and I'm not even sure if I could get any data so I decided to scrap that idea. Then I read about there being a possible link between eye colour and different personality traits and figured I could make a survey to test if there really is any correlation. Do you think that would be suitable for a bio IA? Or is it too simple? My class is the first IB class in my school so I the teachers are not always that helpful so I appreciate any help I can get here.…
Last reply by oakendurin, -
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Hi! This may sound like a weird request, but does anyone know where to get a good heart rate monitor? I am doing my Bio IA on heart rate, so I need an accurate heart rate monitor. Also its the summer vacation for me, so I can't get one from my school. Any help would be appreciated!
Last reply by theswizzlerbruh, -
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Hey there, I'm in the process of coming up with the method of my Bio IA and I really don't know how to do it. I want to measure the chlorella population growth in three different water sources at the same light conditions. Does anybody know enough Bio to help me? What apparatus would I need for it and how could I do it? The aim is to show what water is the most polluted. Thank you, LuisDa Molina Rueda.
Last reply by kevG, -
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HI, so I am thinking about my Bio IA right now. I couldn't think of anything else other than enzyme, -- What is the effect of () on enzyme activity, which is just boring beyond words. So the question is, does the Bio IA have to be interesting? What if I could have a fairly well structured and well planned IA, would it still have to be something interesting to help me to achieve a 7?
Last reply by ShootingStar16, -
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I'm doing Biology HL and I have started my EE. As my research question is "effect of acetic acid on heart rate of Daphnia". Is it ethical to do my EE on Daphnia???? and am I against the animal experimentation policies???? But I'm using very less concentration of Daphnia. How should I justify if during my experiment, Daphnia dies??? Please help me and it's urgent Thank you in advance...
Last reply by kevG, -
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Hey guys, As you may be able to tell from my signature, one of the IB courses that I will be taking during high school happens to be Biology HL. This is completely due to the fact that I want to enter the medical field when I join the workforce. So I finally decided to buy a beginner- level biology workbook from the local bookstore today and I cannot figure out what/ how I'm supposed to study the material. I have a similar workbook for chemistry and I have never encountered any troubles taking notes off that, however it seems as if the biology subject is nothing more than memorization of definitions and diagrams. Chemistry, on the other hand, is all about memorizatio…
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Guys, I have to start my IA experiments ASAP and I decided to calculate the Vitamin C content in different stages of a Banana but I am struggling to figure out how to obtain the banana extract to test in the DCPIP solution or iodine Vitamin C test. I need a liquid extract and I could not figure out how to make the extract. Please help me THanks
Last reply by nirlesh, -
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Hey Guys !!! I have a bit strange question. In Biology SL am I required to learn AHL material? And how many optional topics do I have to study??? Thanks for your response !!!
Last reply by melliflower, -
biology IA --- bacteria ?
by Guest- 8 replies
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So guys, is it a good idea to do your IA on bacteria? would that be too dangerous? or is it even allowed in IB?
Last reply by Alaa Tar, -
Biology question.
by Guest- 1 reply
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Problem solved. Please delete the post.
Last reply by Mahshid234, -
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Hey guys, so i need a Research Question for my Internal Assessment in Biology(SL). I thought about doing an IA on Lipids,Fats or Proteins. Can you guys help me to get a good and more specific Research Question?
Last reply by ShootingStar16, -
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Ok so I'm done the exploration part of my IA, but I'm really frustrated about the raw data portion of it I'm doing mine on the correlation between PM2.5 emissions and the annual incidence of lung cancer in countries that have universal health care. The problem is that I only have 19 countries and Idk if that's sufficient. It's way too late to change the topic, but I chose to do that topic because what we did for my group 4 project inspired me kind of. Also, I looked at exemplars that got decent marks and this one exemplar is the correlation between HDI and the incidence of tuberculosis had HDI and incidence of tuberculosis data for three consecutive years in their tab…
Last reply by kw0573, -
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If anyone could help that would be much appreciated! I'm researching the effect of Light Intensity on the rate of photosynthesis Would it be ok to just calculate the DISTANCE of the lamp from my plant, or do I need to actually calculate the Lux Would I be fine if I just did the DCP section ignoring Lux and focusing on distance?
Last reply by anotheribkid, -
I've been told I have to do my biology IA without an experiment as I have no time and therefore have to do one using databases and meta-analysis. Is anyone else also doing one of these? I am really struggling to find databases with the right type of information and have no idea how to go about it! Does anyone know how to do well in one of these?
Last reply by Jenny Symes-Podić, -
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I just have a few questions regarding IB expectations with regards to lab reports. What sourcing style does the IB prefer / require for lab reports? (Ex: Harvard, AP). If non, which is the most popular within the scientific community? Is there a word limit or page limit for the lab report? If so, is the appendix included within the word/page limit? If there exists a word limit, are footnotes included? What would be appropriate to place within the appendix of the lab report? Would pictures be appropriate? Is it required / recommended to take pictures? If so, should you be in the pictures? Additionally, where would be the most appropriate area to place these pictures within…
Last reply by ellie, -
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I really suck at answering data based questions. It is the only thing that drags my grade down... Do you have any suggestion for tackling the data based questions? Do you know any website that I can do more practices ? Thank you.
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Hello, I'm in HL bio and I'm doing my extended essay on the effect of glucose in the performance in power sports. I know this isn't the EE forum but my questions have to do with bio course content so I figured it would be better here. Anyways, from what I have understood, respiration uses O2 and glucose to produce ATP. What I am wondering is does this ATP go to the muscles or stay within the cell? Or do the muscle cells/tissue produce their own ATP? I looked into the process of muscle contraction, and it says that in the sarcomere the myosin has ADP, and then binds to ATP, and that is pretty much where the textbook lost me... Did the myosin and the actin make the ATP? …
Last reply by Marion, -
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Can anyone please help me with an idea about what topic i could do as my biology extended essay as
Last reply by kakeibgirl, -
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Hi there, we need to come up with biology IA topics really quickly and haven't been given much notice or guidance. I would quite like to do something based on animals but obviously you can't do any experimental work for this. Is there any way I could still do my IA on animals for example a simulation or database based project? Any ideas would be greatly appreciated, thank you!
Last reply by danajungy, -
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Hello guys tomorrow is the deadline to find my IA topic but i havent decided what to do yet. I was thinking to do sth with osmosis since i find it very easy to carry the experiment out. What do u suggest? Please help !!
Last reply by Vioh, -
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In my school, the selection of topics is not free, we receive topics that we have to work on. I have to do something about heart rates and treadmills, this topic seems like it's too easy, and wouldn't earn me any marks since it is extremely simple. Is it possible to complicate this in any way? Perhaps by adding new variables or something? I assume measuring the heart rates and different speeds would be way too simple to get me anything decent. Any input would be appreciated, thanks.
Last reply by mitten98, -
Ib biolog nature of science.
by Guest- 0 replies
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OMG I am so afraid of the nature of science questions. Do you know any website or any resources for revising the nature of science? I mean, is there any past exam questions for the nature of science?
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Hi everyone, I wish you all good luck on your exams. I did my grade11 biology HL exam a week ago and I managed to get a 2. I studied a lot but I still couldn't get a passing grade. A lot of people from our grade have the same problem since the beginning of the year since we are all having problems with our teachers (They are new to the ib and have no idea what they are teaching). I Studied and made my own notes using http://bioknowledgy.weebly.com/ as I really found their presentations helpful and I did most pastpapers from 2008-2013. Because I am doing well on the other 5 subjects I was given the chance to do a resit in Aug. Can anyone give me any tips on how they …
Last reply by Pink97, -
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Hey guys, i need your help. Which of the following will contribute to the cell theory? I. Living organisms are composed of cells II. All cells come from pre-existing cells by mitosis. III. Cells are the smallest units of life. A.I only B.II only C.I and III only D.I,II and III The markscheme says its D. What do you think guys?
Last reply by ShootingStar16, -
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Hiya, Just wanted to accquire some advice on doing well in the IA's for ESS. So far I've done about 3 IAs in ESS with one due next week. It's not a hard one it's a design one. I find it hard to score high for ESS and I really would like to score as high as I possibly can and well I figured since the Internal Assessments are worth 20% I figured it would be good to do well in these to possibly increase my overall grade. What I'm suffering in ESS is the DEC part of the Internal Assessments which include Evaluation and Conclusion. I don't really understand how to write a good evaluation really. Does anyone have any tips? I'm fine with the planning part of the IA as pl…
Last reply by Echowave, -
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what would be the minimum word count to obtain a good grade in the ee for biology? because i have finished my final draft and have 2700 words aprox. but i do not know if it is a very low amount to obtain a good grade as for the humanities you should have 3500-4000 words. thanks!
Last reply by ShootingStar16, -
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Im studying biology from Bioninja and was wondering whether it is enough or do i need to study the textbook as well? The exam includes questions from past papers so.. Really need help on this!
Last reply by YourPrincess,
