Here are a couple of other ideas you could browse and eventually take inspiration from: We hope these little ideas will help you brainstorm and explore further in the vast yet intriguing expanse, which is Biology. In accordance Bacteria with a capital B refers to the domain Bacteria, one of the three domains of life. Before we go looking for IB Biology IA ideas, lets get a clear comprehension of the IB Biology Diploma Programme Subject, its objectives, partwise breakdown, and what IB expects of you. For instance, if you choose to investigate how light levels affect the predation of peppered moths, you could set a background of you have gained a fascination for that species ever since it was introduced to you for some explanation in your regular classes and eventually give more scientific basis for your choice. If you are still not dissuaded then be sure to collect enough data and try to be analytical, don't mix types of music and tempos of music and try to keep the investigation to some biological cause or effect. Constraints, if any, need to be mentioned as well. 18, What is the effect of isotonic drinks on rehydration and recovery after exercise? First is to ensure that there is some biology to explain any hypothesis, and that the RQ is firmly focused in the Biology. Want some A-quality guidance? Along with a bundle of Past Papers, these premium SL notes include guides for your Extended Essay and Internal Assessments with helpful examples! How does the acidity of different beverages affect the deterioration of tooth enamel? Reply 7. 3. . Human benchmark lab - Quite a nice small set of tests, including reaction times, Mean arterial pressure calculator online - a useful little calculator, Sciencelab Chemical data sheets MSDS (Materials Safety data sheets) - useful for risk assessments, document.write(new Date().getFullYear()) InThinking Be unique and think about how it's interesting to YOU! Perhaps some form of experiment using isotonic solutions on slightly dehydrated muscle tissue from a chicken leg, or liver would work. The analysis of the results and the design of the method is another place where PE can be demonstrated, try to take the standard lab and adapt it so show something which is not 'standard'. Exemplars. 6, How does sudden change in body position affect heart rate and baroreceptor feedback? Finding a topic is one of the - if not THE - most important part of writing your IA so we want to make sure that you get it right! InThinking Subject Sites for teachers & their classes, Only teachers can take out free trials or subscriptions to our subject sites at Use it to spread the bacteria across the surface of the Petri dish while rotating it. One possible solution is to measure another (or some other) factors about the body and look for a correlation. This is an interesting topic of investigation which relates to osmosis and ecology. It is all the same when choosing that one Biology IA idea from a platter full of inspiration. These are just some of the questions which will need answering. Narrow down the subject. legislation, you have rights in relation to your data. Well, you can try to model bacteria growth, cell division. I'll start first; for my HL Biology IA, I Investigated the effect of varying wavelengths of light on the growth of bacteria; and ended up getting a 21/24 which is equal to a 7 :) The performance in internal assessment at both SL and HL is marked against common assessment criteria, with a total mark out of 24. Also, be sure that you know all of the rules and regulations for your particular science fair before you begin your project. to inspire and stimulate your grey cells! The milk that they are added to can be preserved in certain ways before the bacteria is added and the growth IB Elite Academy online tutors provides hundreds of IB Biology IA ideas at both IB Biology higher level, IB Biology standard level. How effective are synthetic antibacterial products compared to natural antibacterial products against the growth of Cut bacterium acnes? Take inspiration from these and research further to land on that one idea that gets you going! Pour 250 ml hydrogen peroxide of 3% concentration into the 300 ml glass beaker. LinkedIn, IBDP Maths: Applications & Interpretation, Changes in the Biology Guide for 2025 exams, Video introduction to Learning activities, Distance learning using InThinking Biology, Setting written tasks using pdf worksheets, Teacher activity - Mastering student access, The origin of cells and cell division 1.5 + 1.6, Molecular biology: Activities for Learning, Molecules to metabolism - planning sheet 2.1, Carbohydrates and Lipids - planning sheet 2.3, Structure of DNA and RNA - planning sheet 2.6, Hairy Hands - genetics of mid-digital hair, Genetic modification - planning sheet 3.5, Species & communities - Planning sheet 4.1, Classification of biodiversity - planning 5.3, Reclassification of figworts using cladistics, Emergency room activity - enzyme inhibition, Electron transport chain - revision games, HL Plant Biology - Activities for Learning, Reproduction in plants - planning sheet 9.4, HL Animal Physiology Activities for Learning, Antibody & vaccination - planning sheet 11.1, Sexual Reproduction - 11.4 planning sheet, Option A - Neurobiology - Activities for learning, Neuropharmacology HL - planning sheet A.5, Option B - Biotechnology and bioinformatics, Organisms in industry Topic - Planning sheet B1, Batch fermentation and continuous culture, Biotechnology in agriculture - planning sheet B2, Cryptic messages - bioinformatics introduction, Environmental protection - planning sheet B3, Option C - Ecology Activities for learning, Species & communities - planning sheet C1, Communities & Ecosystems - planning sheet C2, Conservation of biodiversity - planning sheet C4, Option D - Human physiology Activities for learning, Respiratory gases - planning sheet HL D.6, Individual investigation - skills introduction, IA avoiding common errors - model answers, IA Experiments that could be done at home, Investigating strawberries with a glucose test meter. Halophytes and Xerophytes have different adaptations to control transpiration rates, how do they each respond to temperature changes? Citing documents/web pages and giving references is another important aspect of your IA that needs to be taken care of. Use the epidemiological data to measure rates of change. Stomata are the areas of gas exchange in leaves. The 80 Most Common IB Biology Exam Questions! There are obviously many different factors influencing the rate of ventilation, you can investigate which those are! Paper 2 contains short-answer and extended-response questions on the core (and Additional Higher Level (AHL) material . test HL - mark scheme, Animal physiology - test HL - mark scheme, Topic 2 - Molecular biology revision activities, Topic 3 - Genetics SL revision activities, Topic 5 - Evolution SL revision activities, Topic 6 - human physiology SL revision activities, Topic 7 - Nucleic acids HL revision activities, Topic 8 - Metabolism HL revision activities, Topic 9 - Plant biology HL revision activities, Topic 10 - Genetics HL Revision activities, Topic 11 - Physiology HL Revision activities, Option A - Neurobiology - Revision activities, Option D - Human Physiology Revision activities, Membrane structure & function quiz 1.3 & 1.4, DNA replication, transcription, translation quiz 2.7, Evolution - natural selection quiz 5.1 & 5.2, Humans - digestion and absorption workout, IA investigation - teachers marks summary, Extended Essay titles and research questions, Extended essay - self review quiz for students, EE supervisor roles - during the writing process, EE supervisor roles - feedback on a draft. Independent Variable: Temperature, Salts, Humidity, Oxygen availability, Dependent Variable: Rate of Decay measured by pH, mass or temperature change. To find out more, see our. The development of biotechnology. We know that our topic has to be somewhat related to the syllabus, but where should we focus? The evolution of parasites. The data must be analysed by the student and tables / graphs etc. Measuring the change in iron levels of avocados as they go through different ripening stages 25. These Biology IA Ideas Will Help You Get A High Grade In Your Biology IA. 25 Unique Biology IA Ideas Mitosis: Calculate the Mitotic Index in onions and garlic How do different household products affect plant growth Effect of different types of contamination of plants Testing salt tolerance on plants The effect of different variables on fruit and vegetable decay Hereditary effect of Parkinson There are some ethical questions involved too, and parental consent will be essential for any experiments on children. 3. Click here (amylase) or Click here ( pancreatin amylase) from Carolina. A clear RQ is essential and there are quite a few possibilities. 29, Determining the effect of time on the plasmolysis of potatoes, 30, Exploring mollusc shapes with regards to an external variable e.g. At Lanterna we have hundreds of tutors who smashed Biology. It is very easy to extract DNA at home just using everyday kitchen supplies. 3. . IA investigation - teacher's marking activity, Metabolism Respn & Photosynthesis test HL, Metabolism Respn. Sterilize the spreader by holding it over the spirit lamp and then cooling it in the laminar airflow. Before we dive more in-depth, you might want to check out our, to own your Biology SL papers! There should be a distinct maxima in the curve, that is the most sensitive wavelength, and is the one you should use for all your experiments. . Background Information: There are a lot of microscopic organisms and other miniaturized scale creatures living in our mouth. Before we dive more in-depth, you might want to check out our premium IB Biology SL Notes to own your Biology SL papers! By siging up, I agree to Lanternas Personal engagement, exploration, analysis, evaluation, and communication. If youre looking for guidance on how to actually write an IA once youve chosen your topic, check out our IA Checklist post! Exploring how the Water Quality Index (WQI) is affected by water obtained from Chemical Industries/Sewage Treatment Plants. These microbes assault the nourishment scraps that stick to, and in the middle of our 2 teeth. These proportions make enough nutrient agar to prepare two petri dishes. This gives the microbe an advantage when competing for food and water and other limited resources in a particular habitat, as the antibiotic kills off their . 30, Exploring mollusc shapes with regards to an external variable e.g. Need inspo for Physics too? Experimental Setup: Focus on how leaves in different conditions vary in their stomatal density. It will be useful for students who are lost for an idea, or teachers who are looking for something to inspire a particular student. 12 Investigation ideas with a biological twist. http://www.xrite.com/online-color-test-challenge. I'll do so in a series of questions that will help you probe deeper into your IA. Experimental Setup:Create different environments for vegetables to decay in and measure the decay over a fixed period. This is a bit more complex than a simple pulse rate investigation, but the challenge to control variables is equally great. 996+ Videos, 1180+ PDF Files, 5858+ Sample questions. Despite so, there are still some that can cause bloody diarrhea, severe anaemia or kidney failure, all in which can lead to death. Top 80 Most Common IB Biology Exam Questions. The difficulty begins with identifying the genres in a scientific way. Another difficulty will be to devise a way to measure the extent of fruit ripening, or softness. Subject to the conditions provided for by applicable To seek where great ideas come from and change the way teachers/students learn in the 21st century. Several university Extension services are now offering easy-to-use websites for those . Decomposing bacteria and fungi are organisms that help the process of decomposition. tillu22. Does the behaviour of an animal change as the population increases? Lots of scope but not an easy investigation to complete in the time, in 12 pages. If there are any ethical implications to your report, how do you plan on minimizing the environmental impact of your experiment?. In this post, we give you 50 IB Biology IA Ideas to help you speed up your research process. A full experimental setup can be found on this link. Read more about quadrat sampling here, Independent Variable: Soil pH, Nitrates in Soil, Oxygen concentration, Dependent Variable: Presence or absence of certain species. To get started, you'll need to make your agar and fill some petri dishes. Below is a list of 30+ topic ideas for Biology Internal Assessment: Assessment of the effect of temperature on the vitamin C content of various juices What effect can quick shifts in body posture have on baroreceptor feedback and pulse rate? The IB IAs are an essential part of ones overall subject performance since they make 20% of the final score. A challenge is to work out the biological reasons behind you hypothesis, and it may be a good idea to branch away from toothpaste to test a specific chemical from the ingredients in the toothpaste. should include all the normal conventions of d.p. Experimental setup:Find a few friends willing to participate and measure their ventilation rates with a respirometer (the human version) and then subject them to different stimuli. 4, How does varying the gel concentrations of agarose affect DNA migration through a gel? 1, Look at the genetic similarities and differences between species, kingdoms, phylas, classes, genuses, orders, families, and domains. 1678+ Video tutorials, 1226+ PDF IB Resources, 195+ Sample IAs, 148+ EEs, 8777+ Sample questions, 653+ quizzes, IB Some plants grow well in coastal soils with igh salt concentrations but others don't. Comparing boys and girls for example will be impossible, unless the sample size is very large. You. Originally Answered: what are some examples of good biology IA's? Profile. State your hypothesis; it is important in the context of your research. How does stomatal density change according light exposure of red and blue light? 24. 15. The Aim answers Why while the Research Question answers the What. This might involve the use of a data logger, or perhaps a titration using bromothymol blue. Independent Variable: Plant species + humidity/temperature/ light intensity, Dependent Variable: Rate of transpiration. The sure shot way to ace ones IB Biology IA or any IA for that matter is by picking a topic that sparks ones interest. Passion is fundamental in research, after all. NOTES: Probiotics eat the lactose in milk through fermentation. It may even be possible to find a database of measurements of children of different ages. The greatest challenge in this investigation is getting a large enough data set which takes into consideration enough of the factors which need to be controlled.
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