Biology and ESS
For Biology and Environmental Systems and Societies Discussions
1,489 topics in this forum
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- 2 replies
- 740 views
Okay, So I'm really into the environment even though I don't know much. But I just have that whole lemme try to save the world from global warming, save the trees, recycle, shopping eco/ethical, buying everything that is made out of 100% organic, hemp and Product Red. BUT, I've studied biology since primary school..Secondary school (pre-IB), but then, I'm afraid I'll lose out to those who have always taken geography, because I was allowed only either History or Geography, and I took history. I scored equally well for both though, so now being the whole new "mature" me who kinda wants to save the world, and is very interested in the environmental concept, Should I t…
Last reply by Mandiloquence, -
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I'm doing this lab at the moment based on secondary data. Basically some teachers sampled a meadow using 5 quadrats (random sampling method). At the base of the meadow (it's formed as a slope), there is a stream. The quadrat closest to the stream was Quadrat 5, and the one at the top of the meadow (the farthest away from the stream) was Quadrat 1, etc. In the summer, the highest diversity was found in Quadrat 3, and the lowest in Quadrat 4. The next highest diversity was found in Quadrat 2. In the autumn, the highest diversity was still found in Quadrat 3, and the lowest in Quadrat 2. Anyone who might know some possible reasons for this change? Please help!
Last reply by stylusdef, -
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Hey any tips on how to structure a good design pracical? in this case i am suppose to investigate one factor that affects osmosis using plant tissue.
Last reply by SwedishPersian, -
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We are about to choose our optional topics for biology and we are not very certain of which are the best. We are a high level class, but all of us are taking the exam in standard level (we have a really ****ty professor and we don't want to take the risk). We are really worried about the IB exams because we don't feel well prepared, and we don't want to have an extra load with a difficult optional topic. Which would you recommend for standard level???
Last reply by IBdoc, -
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I have a Bio IA (ECOLOGY) due in 2 days and I have absolutely no idea which direction to go in. Basically, I have a stack of raw data from a field trip and I plan on investigating the "Diffence between distribution of a particular species in High Water Level in EXPOSED shore and SHELTERED SHORE" sooo, I'm not quite sure if I should use T-test on my raw data? Simpson diversity index?? or what?? I'll be grateful to any help
Last reply by beccilini, -
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As I said in a previous form, I am starting my first year of Biology HL this year, and I was just looking for some notes online. Are the wikibook notes reliable?
Last reply by talktome, -
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Hi, I am a bit worried because I believe that our biology teacher has misunderstood what IB expects of lab reports. She has given us an outline on how to write a report but i am unsure if it fits with IB. Can you please give me some info of how many reports are going to be assessed and what an IB report is supposed to look like (in chemistry i think we are doing fine) Thank you very much, Capa...
Last reply by Capa, -
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Well, there is a chemistry one. We ought to have a Biology one as well So what options do you take, whether SL or HL. I have HL but the first option we had was sort of compulsary in the school for all Biology students and that was Evolution. It's an interesting topic but I have a bit trouble studying it for some reason. The second topic we haven't decided yet on though.
Last reply by *Sternchen*, -
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The purpose for my lab is to determine the solute concentration of a potato. (Osmosis lab) In my hypothesis, I typed in some background info, the mechanics of osmosis, and how I would find the solute concentration. If I were to use mathematics to estimate that a potato has approximately 25% solute concentration and the actual results prove to be less than 10%, should I change my hypothesis? Or can I discuss why my hypothesis was wrong in my conclusion? This is my first lab in Biology HL So stressing...
Last reply by Referos, -
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Does anyone have the new Lab Report for 2009 onwards? I need help with it and all the rubric help I'm finding is for the old one. If you can help, it'd be great! Thanks! -Jess
Last reply by JessicaaDow, -
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I'm starting HL IB Biology this year, and I never got the syllabus? Does anyone have a copy of it? Oh and this is the first year my school does IB, so is there ANY chance of me getting the diploma?
Last reply by Aquarius, -
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I always seem not to get a 2 on my experminents in SL Biology. I really think I get most of the necessary parts from the rubric into my experiment paper, but usually I don't. Any suggestions on how to actually get 2 on my experiment write ups?
Last reply by moneyfaery, -
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Just thought i might give my two cents worth on Biology study that i've found really helpfull. so my bio teacher writes exam questions for the may exams in the northern hemisphere and has given us a bit of insight into how to know that you know all the content that your meant to. write notes according to the syllabus points. seriously its simple, ingenious, and no one ever thinks about it. okay so all of the questions in the exams have to come straight from the sylabus, they cant use words or topics that arent in ther. And luckily the sylabus in biology is very very specific (unlike history or psychology for example) and detailed. So when your studying if you go through e…
Last reply by Vvi, -
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Well yes... my first biology design lab this year and i'm half-scared half-excited. Too bad the half-scared part has a more important issue: I don't know how to approach my lab topic... So apparently it has to do with enzymes and our class is going to investigate the effect of changing one variable that will alter enzyme activity. Because enzymes work under specific conditions, if you change that specific condition we have to find out how it will change. Some key things to mention( we can choose which type of enzymes we would like to do: beef liver, potato, pineapple .etc) Yay..... So here is my question to you: has anyone done a lab that has to do with enzymes or simila…
Last reply by hk213, -
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Hi, So, I am a junior and almost finished with my first year of HL Bio. We have multiple books for that class, which include Campbell-Reese (the textbook and the lab manuals), Biology for the IB (Minka Peeters Weem), Biozone, a few AP lab manuals, and my teacher prints out previous questions (specific to certain topics) along with the answers which we are supposed to read and study (but aren't tested on). The problem with my teacher is that she assigns the Campbell-Reese online work(we don't have any in class tests) , and considering you can re-take the tests as many times as you want, I don't know if I'm really learning anything. Also, for Biozone, she gives us a wee…
Last reply by Stereoisomer, -
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hello can somebody help me out here?? in my biology HL class im not understanding the krebs cycle i dont understand how the plant obtains energy like does it only get energy from the sun or are there other factors that contribute to the growth of the plant?? Help me!! Peace and IB
Last reply by xsandralee, -
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So we just finished the photosynthesis and cell respiration part of HL. I just wanted to know is it me or is the HL part of photosynthesis and cell respiration ridiculosly hard?? If anyone has done Biology HL could you please tell me how you found photosynthesis and cell respiration at higher level and does it get any harder.
Last reply by xsandralee, -
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Guys, I have always loved to be independent and do everything myself but I seriously need help now. This is my first experiment and I really feel useless here. I havve tried searching all over the net and try to see whether there is a place where I can get some samples of similar experiments but I didn´t find any resource...this is frustrating, I need help ASAP. And it is due on thursday...so basically I am telling you what I have to do. If you can help me in any way...here it goes. Maybe you can tell me what the procudure is or simply tell me how to avoid this kind of situation in the future (Resources much appreciated) Thank you in advance.
Last reply by saya, -
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can anyone help me!! i chose to do chemisrty ofr my exyended essay and have done the extraction of caffeine from tea bags however i have got to a point no where i only used 6g of tes but have like 5g of white-ish powder. the method i used said to add Sodium Sulfate (Na[sub][/sub]2SO[sub][/sub]4) i guess the powder is a mixture of the caffeine and the sodium sulfate but how do i get the caffeine from that. the method i have been following all the way through says to do a sublimination but im not sure any tips would be loved!
Last reply by babakren, -
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I was wondering if any school attended a trip to the Environmental Center there as part of their IB Science trip there? I was told that many other schools go there? Anyone here went? If so, tell me how the experience was?
Last reply by BIO-AQUA, -
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Hello, I'm planning to take Biology SL for May 09 and I was wondering if the following is correct The core consists of Topics 1 -6 [statistical analysis, cells, the chemistry of life, genetics, ecology and evolution, human health and physiology]? This is where paper 1 draws its questions from? The options are A - G? Which do you believe is the easiest to do well in? My teacher from last year recommended C and some other one that I can't remember now. Are we supposed to just study two of the options and that's it [for IB paper 3]? or are we supposed to focus on all 7? I feel studying an additional 5 options would be unnecessary. Where does paper 2 draw its information fro…
Last reply by chileanbob, -
IBID Bio book 1 2
by beli16- 31 replies
- 5.9k views
hello! it is the schools first time that its offering bio hl. in the past they have only used the studyguide as its sufficient for sl. I was wondering, does anyone have the IBID bio book, because im having a hard time grasping information just from the studyguide.. is there anyway u can upload it?! its for the old curriculum, last exam in 2008! thanks!
Last reply by booji, -
Why is it an advantage to have a division of labor between different organs in the body?
by stylusdef- 2 replies
- 4.4k views
Why is it an advantage to have a division of labor between different organs in the body? I need to know that for tomorrow. Please help me. I just need a very brief explanation. No details. I would really appreciate some help!
Last reply by booji, -
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sorry i need more help. does anyone know any procedures on the extraction of salicylic acid from herbs like white willow, or fruits like strawberries? i googled everywhere and i cant find anything..
Last reply by booji, -
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I hate lab reports. I just can't figure out how they are supposed to be structured and how you find perfect explanations and solutions to the problems encountered. I hate lab reports. I know you can get 6 points on each of the three criteria. My best score is 4-3-2. That's crap, because I'm quite good at biology otherwise. So, however, now we've just done this wonderful practical where we investigated the effect of vessel size on bacterial growth of E.Coli. Of course there's a report on this. Have anyone here done the same practical and feel like they can explain what happens? And does anyone know a site or something where you can find reports that have received great …
Last reply by LaBRaT, -
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Someone once told me that ES and Biology cannot both be counted for the IB Diploma because there is significant syllabus overlap between the two courses. Is this true? I ask because I'm looking for a 'filler' SL subject for my Diploma. I'm taking Bio, and I remember hearing about the ES/Bio thing before, and also because IBO had scheduled the two exams at the same time, which seems to suggest that most Bio students are expected to NOT be ES students. My IBC claims that there is no such rule, however he is very new and nobody in my school has ever done ES + Bio together. I certainly do not want to slug through 2 years and find out that I don't have enough subjects for …
Last reply by hellogoodbye, -
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Hi i'm currently doing grade 11 bio in SL and my teacher finally gave me a design lab today and i'm supposed to finish the outline in 2 days. The problem is: search for the relationship between two variables to determine their effect on the cardio-vascular for breathing systems. (ex. age affecting heart rate) I was thinking of heartbeat or breathing but i don't know how to approach further from here... Can anyone give me some good topics that has to do with either heartbeat or breathing????
Last reply by BIO-AQUA, -
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Hi, I know the breakdown of the Biology HL exam (which comes up to 76% of our grade) So what is the other 24%? Our portfolios and Group 4 project?? So lets say I get 70% on the exam (which equates to about a 5) , do I add that score to my Group 4 and portfolio mark?? and henceforth boost my mark to a possible 6? Thanks,
Last reply by Mr. Shiver, -
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any1 here take environmental system? any of u have any tips on how to revise for Environmental system cuz i found it hard to actually revise cuz there is no textbook
Last reply by 08adytiah, -
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Hey. Could anyone please give me some info on the differences between these two courses on standard level?
Last reply by jiggapunch, -
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This is a very simple question, and I think my brain is just being stupid right now, but I have just started revising for biology and the way that the IB textbook teaches how to calculate linear magnification of drawings is very confusing to me. Could someone please explain to me how to calculate the magnification of a drawing? Both converting a given magnification to a scale bar, and scale bar to magnification would be nice , thanks.
Last reply by ibkid, -
Hi, I'll start with a simple question to my problem: Where can I find volume and concentration instructions for a Catalase-Hydrogen Peroxide experiment? Basically, I have access to 5% Catalase and 20% Hydrogen Peroxide. I do not know the volume amounts to add of either so I need a source of information on how much, milliliters for example, of each I should add (preferably an internet site) as well as in what concentration they should be added.
Last reply by Rawrn3ss, -
Bio HL. LAB WRITE UP
by Guest CNguyen90- 14 replies
- 2.5k views
AHH! so i have a lab write up due tomorrow however my teacher gives very unclear instructions. by any chance can anyone send me an old lab write up? the subject doesn't matter. i just need to know if my format and such is correct. thanks!
Last reply by master135, -
- 5 replies
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Does anyone know where I can get my hands on the biology syllabus? I'm in the pre-IB, but I'd like to see it before I start the real thing after this summer. Or maybe they will change the syllabus until then? I dunno...
Last reply by bescherelle, -
- 2 replies
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is it just me or are other ibers facing trouble with the waves topic!!!!!!!!!!!! there are some parts i get and some i dnt... it prolly the teacher he's in such a hurry these days we're even taking physics instead of english B (since we're done with teh material) if anyone can help explain and answer this question for me it would be of great help! i'll try to ask the teacher (if he's got time...he's part-time) here's the Q: (a) (i) State the principle of superposition. ................................................................................ .......................................... ................................................................................…
Last reply by tvd7, -
Hi everyone! I dunno if anyone here have any problems with the cell theory. I found a very good site where u can learn almost the whole topic 1 and 2 of biology there. They some quize and animation videos to show how the eg. cell cycle looks like It may help a lot before the exam Hope this will be useful for everyone here!!! ^o^ http://www.cellsalive.com/toc_cellbio.htm
Last reply by Delione, -
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I might have an idea on how this works but I'm not completely sure. I figured I might as well go into this forum and ask all you IB Biology dorks! I'm in Pre-IB, so this is only like the basics. However... The circulatory system is like the circulation of blood throughout our bodies. "Oxygen poor" blood returns to the right side of the heart after it has completed its journey throughout the body, and is then pumped to the lungs which provide it with a new supply of oxygen. After this, the blood flows into the left side of the heart, where it is pumped out to the body through the aorta, until it eventually returns to the right side of the heart again and the cycle is re…
Last reply by stylusdef, -
- 4 replies
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I am currently enrolled in AP/IB HL . the exam is in may 2007 but our class on meiosis and mitosis. Biology is so hard, especially for my class. My teacher is mean and strict. http://en.wikibooks.org/wiki/IB_Biology this is a really good sites with IB biology questions tha can helped to prepare for exam.
Last reply by whattheazn, -
- 6 replies
- 1.6k views
Hi, I have to write my first bio design, more or less I know how to do this and my question is do you (experienced IB students ^^) have any good advises or methods to write bio design (and in time) ??? It seems like a nightmare to me, lab reports are enough complicated and design is much more difficult.
Last reply by Harmonicgirl,
