Biology and ESS
For Biology and Environmental Systems and Societies Discussions
1,489 topics in this forum
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- 25 replies
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The title says it all Just share your studying strategies for Biology that help you score high.
Last reply by keepxdreaming:), -
- 1 reply
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Hello! Just a quick question (I searched some handbook thogroughly, but found no answer): How many lab reports do we send to the IBO per student? Is it just that I can select a few of my best or do they require all? Also, I heard something about selecting some labs for marking only a certain part of the report - e.g. I would like my Data Collection & Processing to be examined in Lab 1, but in Lab 2, I had a better Conclusion & Evaluation ... Is this so?
Last reply by Daedalus, -
- 2 replies
- 871 views
I'm trying my best to turn my dream into reality in biology but there are other doubts in it and questions which I need you guys to answer please!!!!! 1. We are almost done with our IA in biology and I'm quite sure I will get a solid 5 or 6 but there are some other doubt which are pulling me down like the possibility in getting 7 in paper 1,2,3? 2. Do the examiner used to repeat biology multiple choice question in paper 1 from the previous years? 3.Can any one clarify to me what topics came last year in the exams especially in paper 2 may exam ?
Last reply by ochaya, -
- 1 reply
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Hello everyone! Do you know what do the aims within the bio syllabus, such as Aim 7: Data logging can be used to measure changes in conductivity in distilled water as Na+ and K+ diffuse out of salt–agar cubes or dialysing tubing.. it actually mean? Would this mean that this could actually be the subject of the data analysis in section A of p2? Furthermore, In the question about suggest a method, is the answer reflect whether you have read around the subject or not or just you have to stick to the syllabus? Another question to ask, what do you think about starting with section b that has more marks than too start with section A,so you get the long-answer questions firs…
Last reply by Mahuta ♥, -
- 6 replies
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I am in higher level biology with a teacher that has taught for many years in IB biology but seems to be falling behind this year. She started teaching college classes on the side and it has really had an effect on our class. Everything she assigns is simply taken off of the internet, there is literally NO class notes, learning, or help from her. We do everything on a computer and if we have a clarification issue she simply says "look it up." We have taken this up with our IB coordinator and he has talked to her but that has only made her become more strict on due dates and homework and not changed her teaching style. We don't have another teacher that can fill her spot s…
Last reply by zagster11, -
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Hey guys, I'm looking to do an Extended Essay in Biology, focused on Option E: Neurobiology and Behaviour, as I'm looking into entering a Neuroscience program for University. I was wondering if anyone here has any ideas on what type of experiment I could do or anything like that. Thanks!
Last reply by Sandwich, -
- 9 replies
- 942 views
Is it a bad thing that I didn't run my trial 5 times? Or could that just get put in evaluation... my teacher approved a plan in which i measured my data every 30 minutes for 2.5 hours, not one in which i did the same thing 5 times, if that made any sense. My teacher is of no help. She gave us a poor copy of the rubric and an even more poor copy of a sample lab report.
Last reply by simplisticwonders, -
- 8 replies
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anyone still doing this bio experiment?? can you give me a general idea about this.. help me..thx! hope someone know..
Last reply by Prissila C, -
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does anyone know of what came up in the 2010 Hl BIO papers? like what topics in particular came up in P1 and P2?
Last reply by Bishup, -
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Hello people-i have an important question about my lab report about germination period of "Cucurbita pepo"(zucchini). I am experimenting the effect of adding organic acid(vinegar) to it and some has not germinated since i started(14 days) and i need to write its report. Should i take 14 days of germination period for the ones that didnt germinate(because i need to calculate an average day of germination,deviation,variance etc., with the explanation why i did write 14) or should i take them as 0 because they had not germinated at all?-Thank for your help
Last reply by Semih_Kaldirim, -
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Hello. I was just wondering how long your biology IA labs were, including title page, appendices, works cited? How many pages in total would be reasonable? More specifically, how long of a conclusion is long enough to cover everything? I think I could be able to go on and on for 10 pages of conclusion (excluding evaluation), but I think that's obviously not what IB wants? (Even though this is internally assessed...) An unrelated question: can there be some handwritten parts? Such as the labelling of hand-drawn diagrams? Thanks.
Last reply by sweetnsimple786, -
- 3 replies
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Hi Okay, so in Biology we're doing our final IA and it's meant to be on food enzymes. I've researched a lot on different enzymes and I've come up with 2 that I could possibly research but I'm not sure how. I'm really confused. I found Papain, which is an enzyme found in Papaya which breaks down proteins in the stomach and another one is Pectinase, which is usually found in fruits (specifically Apples) but I don't understand how I'm going to test them and on what? Help please?
Last reply by Mahuta ♥, -
Biology Help!
by IBU- 1 reply
- 848 views
How to do standard deviation with a line graph?
Last reply by Matthew Sinclair, -
- 2 replies
- 921 views
Hi people! I have a question about lab plannings in ES. Are you supposed to include a "background information" and if so, what are you supposed to include in it?
Last reply by jackie_mackie, -
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well, i need to design an experiment about hte glucose levels in drinks. how exactly would i plan/do/present this design report??
Last reply by Drake Glau, -
- 2 replies
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Okay, so we're doing a lab on how certain factors affect enzyme activity. We were told to do either ph, substrate concentration or temperature and we can pick one of these four enzymes: diastase, lipase, pepsin or pancreatin. Also, we need to measure the results quantitatively. I need help! i have no clue what to do! I was going to use pepsin, temperature and egg whites (boiled) and see how long it took to dissolve and use the mass for my results but apparently dissolving the egg could take 12 hours and i don't have that kind of time. Does anyone know a simpler, faster experiment??? (oh and we're also allowed to use other enzymes if we want, like the ones in pineapple j…
Last reply by Drake Glau, -
- 2 replies
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I need to design an experiment to investigate the factors that affect cell permeability, but I am not allowed to use temperature and pH as factors so I'm really stuck. Can anyone please give me some sort of idea as to what research question I can do?
Last reply by ShineeLikeMe, -
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Hey, does anyone know where to find the 2011 question bank for SL Biology? Thanks!
Last reply by Abdominal Procrastinator, -
- 1 reply
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At the moment I'm doing a prac on how yeast respires in different sugars. Basically, all the information I am finding is contradicting each other and I am so confused. My question is, should glucose or fructose have the highest rate of respiration? I would think it would be fructose because in cell respiration glucose is turned into fructose before pyruvate, but some sources I've found say that fructose must be turned into glucose before it can be used. I really don't know what to trust and could really do with help from anyone that knows anything about this.
Last reply by Drake Glau, -
- 5 replies
- 3.8k views
I am currently doing the second year of IB and I have to come up with my own experiment. I am finding this a bit complicated. Could you give me any ideas, suggestions, research questions you have already done or you might be thinking of doing, etc. Thanks
Last reply by canutox, -
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Does anyone have any questions (multiple choice) on Plant Science, topic 9 in IB HL Biology? =)
Last reply by Matthew Sinclair, -
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Ok, i was talking to a kid who is in their exams at the moment and he recommended that i use dot point format when answering paper two questions, I can understand this in section a, but would i lose bonus marks in section b? cheers
Last reply by Drake Glau, -
Regarding IB Bio Exams
by Guest deathwish546- 4 replies
- 1.5k views
For all section B questions, it always says "Up to two additional marks are available for the construction of your answers." What does this mean? What exactly are they looking for in the "construction of your answers"? My teacher was incredibly ambiguous and confusing regarding this and I don't want to lose those 2 marks due to confusion.
Last reply by Matthew Sinclair, -
- 1 reply
- 3.1k views
I can't think of design for an IB Bio lab. Here is our objective: "Design, conduct, and analyze an experiment that tests the behavior (taxis or kinesis) of an insect." We must find out the following about our insect: Habitat and Distribution Lifecycle Anatomy Diet Predators Classification Interesting Behaviors Impact on environment Help me please? It's hard with so little information about what we are supposed to design
Last reply by Drake Glau, -
- 1 reply
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I have encountered a problem with calculating the percentage error for the enthalpy change. In the reaction solid sodium carbonate was added to aqueous sulfuric acid. I already calculated percentage uncertainties for m (acid) and delta T, and added them. However, I suppose that is not the end, and I should also calculate the percentage uncertainty either for the amount (in this experiment amount of acid = amount of carbonate) or for the mass of carbonate. I don't know which one to calculate. In the textbook I have they also calculate the % uncertainty for K, however I don't think it should be included, but I might be wrong. I know how to calculate next steps, but I am stu…
Last reply by Drake Glau, -
- 1 reply
- 901 views
The greater the volume and surface area are the faster the rate of diffusion is.........is that right? Thanks! No nevermind....the greater the surface area =faster diffusion greater the volume = slower diffusion?
Last reply by Drake Glau, -
- 7 replies
- 4.6k views
Hello can anybody suggest me a good option for Biology SL? My teacher said we need to study ourself the option topics. I am not good at science, so I want to know what is the easiest option. Ive looked at options, and I think Option A (human nutrition and health) and Option B (physiology of exercise) seems to be easier than others. What did you choose for your option? thanks for reading!!
Last reply by gagabriela, -
- 3 replies
- 877 views
Just today, my HL biology teacher showed the class this website that has all the materials that covers the entire IB bio 11 But problem is, i was not paying attention and i forgot what the site was called. The only clue that have is that the site name has the number [4] in there~! Does anyone know where i can find this site?
Last reply by IB Andy, -
- 2 replies
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I am so lost and I'm hoping for a bit of help.... How does volume/surface area affect the rate of diffusion? Has anyone done that lab with the agar cubes where you put them in NaOH and calculate the rate of diffusion? What type of graphs should I make? What should I be comparing? Any helpful tip/hints that would help me? Thanks!!!
Last reply by Drake Glau, -
- 7 replies
- 18k views
"In this lab, you will devise a controlled experiment that will test the effects of a certain variable on the rate of photosynthesis." As the instructions for my lab read. please help with a suitable topic and a way I could carry it out! I need to include a design and data collection
Last reply by Drake Glau, -
- 7 replies
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Hi everyone, I'm still starting off in IB, so forgive me for being so confused lol. My biology teacher assigned a biology design lab write up which is due soon. It has to be relevant to the tonicity of a fruit or a vegetable. How do I go about this? Thanks in advance!
Last reply by Mahuta ♥, -
- 4 replies
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Hi there As most of you know during the IB course we have to design an experiment! Now we have been told to design an experiment which demonstrates or relates to global warming. I have my concept and everything [so no I'm not asking for a topic!] however in my method I will obviously need to make it detailed. I am wondering which is the best method [for a basic lab] to obtain the following gases; Carbon dioxide, Methane, or any other suggestions you may have. This would make a big difference to my process! Thanks
Last reply by ShineeLikeMe, -
- 6 replies
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Our bio teacher told us to do a design lab on investigating the behavioural responses of woodlice to an environmental factor.. So my question is... where the heck do I begin? Can someone please help a completely lost bio student?
Last reply by Licorice, -
Questions about CE portion of labs
by Guest deathwish546- 0 replies
- 610 views
As it says in the description, how many strengths and limitations/improvements are considered a good amount for a DCP/CE Lab? Also, can't we just use the controlled variables from the design as the strengths? Because they technically are the strengths. What sets controlled variables and strengths apart? THANKS IN ADVANCE!
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GRADE 9 SCIENCE. ! respond asap?
by Guest ohhh mayn- 4 replies
- 2.4k views
Okay guys, so uhmm... I'm in grade 9, pre-ib, and ... i got my science test back today... with a 32% on it.. i had a 87% average but this is bringing it down SOOOOO MUCH! i've already asked for a retest and my teacher said no . he's threatening to call my parents! any suggestions ??? Should i worry a lot... my teacher said to chill, its just 1 test but i AM SOOOO SCARED !!! please help!
Last reply by Drake Glau, -
- 0 replies
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I was assigned an ESS IA which deals with cars their impacts on environment, carbon footprint etc... The problem is: My school is in need of a new car and itt is used for school business such as picking up important visitors from the airport, drive staff to local appointments outside of school and available for use by the Head of School. On occasion it has been used in off-road conditions such as scouting out new field trip opportunities. The new vehicle needs to meet the following requirements/features listed below and be the most environmental model available. Features: • Seat 6-7 people (at least 4 doors) • Flexible seating (able to remove seats to increase/decrease l…
Last reply by tndunganh, -
- 1 reply
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This is probably around here somewhere but I can't find it. Can anybody give me a decent template for the write up of a Bio Design Lab? Our teacher doesn't really care how we do it but I get the feeling that the IBO might...
Last reply by Mahuta ♥, -
- 6 replies
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heya, i just did a lab on how changes in concentration of inhibitor (lead acetate) affects the activity of catechol oxidase. But i got some strange absorbance readings. The website where i got the idea from said to get the transmission but my teacher said to do absorbance for some reason and i have absolutely no idea what sort of readings i should get, what i got doesnt really match my hypothesis, so i was wondering what sort of colour changes that other ppl got? or if you know a website that sort of tells you what sort a graph you should get?? thanks
Last reply by raetaylor, -
- 3 replies
- 933 views
ok so my hl bio techer doesnt teach a thing... she expects us to know everything and now i am failing that class cause i didnt have her freshman year what should i do???? other than get a tutor i have already done that and on top of that the labs she makes never work out and she still expects us to do them perfectly ugh i need help im over stressing (i bet not even med school is like this) (I wish there was HL anatomy (i would be the best in there) but nooo i dont get to choose my classes or teachers i love bio (i watch youtube things on bio just havnt been able to cause of time problems but oh well whatev) but nooo she takes out all the fun in bio
Last reply by azulverde:), -
- 2 replies
- 797 views
Not sure if every school's the same, but for Biology, we will learn the basic things needed to be learnt, but I guess we have 2 main topics we will be focusing on extensively? Anyways, I was wondering if anyone here had to choose like 2 topics out of around 8 or 9 to learn about. We're doing Neurobiology and Ecology, the latter only to get higher marks because the teacher said it was easier. So, anyone had to choose like one or two topics to focus on?
Last reply by Dr. Polaris, -
- 3 replies
- 2.1k views
So for this year, my second year of HL Biology, we got a new teacher because our teacher from last year retired. Our new teacher this year does not seem to know very much in my opinion and it's difficult to learn in his class because of the fast pace and his jumbled class structure. A lot of us are pretty scared that we'll fail the exams for HL Biology. What I'm wondering is, if I basically studied and read the Heinemann Baccalaureate Study Guide intensely and thoroughly, would I be in good shape? At least pass I mean? The textbook we use right now is for Advanced Placement Biology and goes really in depth; subsequently our teacher takes the lecture powerpoints from the t…
Last reply by JoeG, -
- 2 replies
- 5.4k views
Hey, So with this biology design lab, our teacher left us this for info: Design and carry out an investigation into the effect of an abiotic factor on the distribution of a population. Assessment: D, DCP, CE Literally, thats all the instructions he gave us, and i really don't get this. Can anybody explain it better, and give some advice, or something? :/ Thanks
Last reply by guibu, -
- 0 replies
- 1.6k views
hi lovely and helpful people !! I need your help. Today in biology class we conducted experiment pertaining to Lincoln Index ( which measures estimate of population). Teacher asked us several questions that I am not sure how to answer. We were working on seeds of beans. May I relay on your help?? These are questions: 1) Why did the estimate of number of individual in population ( counted by Lincoln Index) differ from exact count of the population of beans ? Discuss some of the factors that might affect the accuracy of your estimates. 2)Why is it important that the times between the first and second samples be a short time compared to the organims's life span? 3) How did …
Last reply by dufka, -
- 1 reply
- 2k views
I'm currently taking IB Bio HL, and I was wondering what the internal assessment for that class is? Is it the lab report grades of all the practicals? Also, I got a really bad grade for my first lab write-up, a 14/18. Will that severely affect the grade of my internal assessment?
Last reply by Sonneteer_Trombonist, -
biology revision - biological drawings and uncertainties
by Guest ramonimacaroni- 1 reply
- 1.1k views
i just wanted to clarify a few things on biological drawings and uncertainties, particularly on the latter. a couple of questions i need answered: 1) in biological drawings, must the entire field of view be drawn? or only (at most) 3-4 cells that can be seen? 2) i'm still quite confused on how to get uncertainty values. us bio kids always argued with the physics and chem kids because, for some reason, our uncertainty values would be different. can someone please give me an example? for instance, let's say we're measuring the mass or the length using (g) or (cm) as a unit of measurement. how would you come up with the uncertainty value? help would be much appreciated ^^ th…
Last reply by Bishup, -
- 3 replies
- 1.2k views
Hi buddy. I need some Help about my lab in bio it consist in Comparison of Rekuperations of smokers and nonsmokers after 30 jumping jacks. I need some bibliographi where can i find more information about it specific.
Last reply by Sonneteer_Trombonist, -
- 0 replies
- 782 views
Hi buddies if someone know where can i find information about this question said me. Thax, i cant understand it
Last reply by paulcheno, -
- 0 replies
- 678 views
Hi, i will need help to understand it, i have try to understand it but i havent found an relation. Also if someone know some information about it. Send it to me
Last reply by paulcheno, -
- 0 replies
- 769 views
Hi buddy. I need some Help about my lab in bio it consist in Comparison of Rekuperations of smokers and nonsmokers after 30 jumping jacks. I need some bibliographi where can i find more information about it specific.
Last reply by paulcheno, -
- 8 replies
- 1.3k views
Hello my biology teacher gave us instructions related to the investigation. She said we have to do it during summer holidays. I am not sure which plant to choose. Please help me. This is what she said: The title of investigation: Influence of chosen factor on plant development 1) You must narrow/modify the topic given by choosing one factor, specific plant(s) and their stage of development 2) Define your resreach question and hypothesis
Last reply by x___x,
