IA Biology HL 6 Investigating the relationship between consumption of fat and carbohydrates per capita per day measured in kcal and share of adult obesity in a country as a percentage of the population IA Biology HL 7 Investigating Effect of Different concentration of pesticides on bacterial growth. This begs the question, is there an ideal concentration of sucrose for yeast growth? then this could be a very good study. Bacteria are single-celled microorganisms with prokaryotic cells, which are single cells that do not have organelles or a true nucleus and are less complex than eukaryotic cells. Get your own tutor today! For strict autotrophic organisms - Only inorganic compounds. 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. Let's help inspire M22 students since it's already IA season! The challenge is to explain why there might be a change using biology and then to test it using some type of ecological sampling. Experimental setup: In this ecological experiment, you will use quadrat sampling to test how successfully different plant species grow in environments. The challenge will be in deciding which concentrations to test and in explaining the results. Sitting in that quiet corner, sipping on hot chocolate hoping it rains IB Biology IA ideas, instead, going blank and utterly confused? Independent Variable: Light exposure, Different Species, Atmospheric CO2 concentration, Dependent Variable: Stomatal density (seen under the microscope). Login length need to be from 3 to 40 characters, Password length need to be from 8 to 40 characters. Stomata are the areas of gas exchange in leaves. It is all the same when choosing that one Biology IA idea from a platter full of inspiration. Using nationally published data on epidemiology and weather data is certainly possible and it could happen that there are correlations between climate and some disease outbreaks this will need explaining in terms of the mechanisms of transmission of the specific disease. This might involve the use of a data logger, or perhaps a titration using bromothymol blue. Experimental setup:Follow this link to for more information of modelling! Learn everything you need to get a 7 in your IB subjects with our online courses. IB Biology IA Ideas wont strike out of the blue, but heres a list of 30+ IB Biology IA ideas to inspire and stimulate your grey cells! Weaknesses like using high uncertainty apparatus should be addressed in the evaluation. IBDP Biology InThinkingSubject Sites for teachers & their classes The milk that they are added to can be preserved in certain ways before the bacteria is added and the growth Exploring root hair cells and finding their visibility with age. compare? Get for free what others have paid $100s in tuition Independent Variable:Temperature, Oxygen availability. Population growth curves. assessment, worth 20% of the final assessment, consists of one scientific investigation. 16. there Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew 14, What is the respective change of allele frequency when initial frequencies are manipulated? opening the floodgates to that sweet 45! Thankfully, weve asked some of our favourite IB graduates for some of the ideas they pursued! (1 More IB Past Papers). Experimental setup:In this ecological experiment, you will use quadrat sampling to test how successfully different plant species grow in environments. Perhaps the muscles with a greater blood flow will cause a different effect to those in the bodies extremities, and what effect could warming up have on the process? Some assessment of the reliability of the sources will be needed and some discussion of ethics of using someone's data, with their consent, hopefully. Practical procedures and controls will be the challenge, but data should be easy to record if the seedlings grow. Reply 7. Within each topic listed below, we include the basic reasons for investigating each topic, what the possible independent variables and dependent variables are as well as the basic experimental setup! There are obviously many different factors influencing the rate of ventilation, you can investigate which those are! Heres a useful link for ventilation rates. Lots of scope but not an easy investigation to complete in the time, in 12 pages. Download our Guide: How to Write a Perfect Biology IA (Click Here), If youre interested in getting additional support for your Biology IA, we have a team of expert IB Biology tutors that can help you plan, structure and execute your assignment. Soil respiration can be measured using a CO2 probe and a data logger the same equipment could be used to measure the rate of photosynthesis, although growth (or photosynthesis) can be measured in other ways too. Math solutions -. Pease comment on broken links and suggest alternative ideas in the comments. Want some A-quality guidance? Then, add some liquid soap (like the one you use for washing the dishes), juice from a grapefruit, and . This investigation is going to require a very precise research question and some careful methodology to ensure that the data collected can be used to answer the RQ. Email length need to be from 5 to 40 characters, Password length need to be from 5 to 40 characters. Browse. The IB advise student and teachers, each year, to avoid this sort of lab. It is important that you do the work yourself and not just copy the material. What is the most effective way of fighting an endemic? Lots of plant ideas in the questions and answers It is also possible to use this method to study glucose levels in ripening fruit, lactase activity in milk producing glucose or maltase activity in germinating seeds. Comparing the buffering actions of various substances: antacids, milk, sodium bicarbonate, sodium carbonate, detergents, etc. It is imperative to acknowledge the safety protocols as established by IB and consider the ethical aspects of your investigation. Decomposition is crucial to the cycling of elements, such as carbon from one living organism to another. These are all genera and the specific species present definitely vary between cultures. Therefore, 5 trials with 5 samples each make up 25 samples in total. These ideas are meant to give you a little head start along this path; your final IB Biology Investigation idea is your interpretation of one. 8, How do the buffering actions of milk, yogurt, juices, detergents etc. This is a great idea, but it could be complex and time consuming depending on the lab. The stages of embryonic development. Independent Variable: Plant species + humidity/temperature/ light intensity, Dependent Variable: Rate of transpiration. They found that they could propagate their leavening by saving a bit of unused dough to sow the . legislation, you have rights in relation to your data. Where do you even begin such a task? The will (hopefully) impact the success of germination. it might even be possible to use mesocosms to perform this investigation as these would make it easier to control more of the other variables. 30+ New IB Biology IA Ideas. How effective are synthetic antibacterial products compared to natural antibacterial products against the growth of Cut bacterium acnes? What has inspired you to do that topic? One possible solution is to measure another (or some other) factors about the body and look for a correlation. The task will have the same assessment criteria for SL and HL. The first step consists of spitting on the glass and adding a pinch of salt to it. If there are any ethical implications to your report, how do you plan on minimizing the environmental impact of your experiment?. This study could be an investigation of how effectively the toothpaste inhibits the growth of bacteria according to the scale of the chemicals in the toothbrush. 10, Can we slow down the decaying times of vegetables? The climate is different at different altitudes and the growing season begins later at high altitude. http://www.xrite.com/online-color-test-challenge. Using paper chromatography to analyse the various dyes present in different brands of jelly candy. All rights reserved. Different plants that live in different conditions will have different requirements for gas exchange. The challenge is really how to control the temperature of the fruit (or the light) for a long period of time, perhaps 2 weeks. Remember, the Independent variable is one that you are allowed to change(just one); the Dependent variable is one that you measure as it changes with the Independent variable; all the other experiment conditions must be kept constant to ensure that the experiment is fair. InThinking Subject Sites for teachers & their classes, Only teachers can take out free trials or subscriptions to our subject sites at While these organisms inhibit the growth of many pathogenic bacteria and are also inten- tionally employed to ferment milk to make other dairy products such as yogurt and cheese, they can also induce 28, How do different antibiotics interact with the process of seed germination? Subscribe and get the latest IB guides, notes,news, tips and product updates. This is a simple idea, but the explanation is more complex, and this might be the challenge of this particular investigation. Click here to learn more. Need inspo for Physics too? 16, Determine the effect of glucose concentration on the rate of osmosis. This is a bit more complex than a simple pulse rate investigation, but the challenge to control variables is equally great. Testing global warming: How does CO2, water vapour, oxygen, or any other variable affect temperature inside a cutoff bottle exposed to simulated sunlight? Atriplex amnicola) and expose them to increasing increments of independent variables, observing how their transpiration rates change. Remember! 5 years ago. This is an investigation to test a hypothesis that reaction time wll slow down with age. IA Overview. Auxin hormone is largely responsible for controlling the direction of plant growth. 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 Experimental setup:Set up an experiment that measures the ethylene or CO2 levels of fruits over time, and expose different fruits to different independent variables. Toothpaste is supposed to block bacterial growth. To find out more, see our. Reply Independent Variable: Temperature, Salts, Humidity, Oxygen availability, Dependent Variable: Rate of Decay measured by pH, mass or temperature change. Biology HL IA Idea Proposal - Bacteria vs Fertilizer Course Biology HL Institution Queensland Academy Of Science, Mathematics And Technology This is a detailed proposal for a HL Biology IA complete with a full methodology, research question, and basic Introduction. Of course the ideas are just ideas, nothing is specified and all the details will need to be explored and evaluated by students during their investigations. classes to learn/preach! You can find more information here, Independent Variable: Different Antibiotics, Different Seeds, Dependent Variable: Success of Germination, Rate of Germination. My IA was on bacteria by the way if you have any questions. Sterilize the spreader by holding it over the spirit lamp and then cooling it in the laminar airflow. IB Biology IA Ideas Different abiotic factors affect the growth of different plants, test the different conditions and then note how plant species change in their presence. 24. Dependent Variable: Respiration Rate (measure with respirometer or gas probe detecting CO2 formation. One nice idea might be to see if the growth in the lungs' vital capacity correlates better with the circumference of the skull or the length of the legs in children of different ages. This investigation relies on the recording of abiotic data and data about the stage of the flowering cycle using the number of flowers / fruit / buds etc in a single species at different altitudes up a mountain. Some preparation time will be required to germinate and plant the seeds. Interactions of Bacteria and Fungi on Decomposing Litter Biology . Measuring theses factors might be tricky and will involve some testing, although using a phone camera or a video camera could help. Avoid this type of investigation, . 3.2 The More Data, The Better. This investigation tries to establish a pattern between the weather and the spread of a disease. Here the challenge is the exploration section. Comparing the Carbon Dioxide levels in the air exhaled after and before workout sessions. 1. In accordance Right from neurobiology to the fascinating subjects of the immune system, MyAssignmnethelp.com covers a wide range of biology research topics. We hope our list of Internal Assessment Ideas was useful. Check out this link for more details, Independent variables: Age of participant/Age + sensory stimuli (how to hearing, seeing and touch-based reaction rates change), Dependent Variables: Time taken to catch ruler between fingers /Time taken to clap when they see light, Challenges: getting enough people to get reliability, controlling variables, Different diseases spread at different rates in different weather conditions depending on how they are passed between organisms (Skin contact, Blood-Blood contact, Cross-species barriers). Luckily, theres so many great topics to choose from, and we've asked some of our top team to note down some topics that might inspire your own incredible research! How does the acidity of different beverages affect the deterioration of tooth enamel? 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. The internal. These Biology IA Ideas Will Help You Get A High Grade In Your Biology IA. Using a previously characterized and described abdominal model to define the avian immune response to Salmonella intra-abdominal challenge in chickens, we have adapted this technique for the study of chickens' immune response to a Campylobacter intra-abdominal challenge. A clear RQ is essential and there are quite a few possibilities. 2.1.2 Salt Doenjang is incubated at different salt concentration, controlled by the amount of sodium chloride dissolved in 100 ml of . Independent, Dependent variables need to be highlighted, as should the hypothesis. Before we go looking for IB Biology IA ideas, lets get a clear comprehension of the. Comparing Gersmehl diagrams from different biomes or applying them in different real-world conditions by measuring the content of nutrient sinks- biomass, litter, or soil. In this post, we give you 50 IB Biology IA Ideas to help you speed up your research process. 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. There are biology topics that can be connected to culture, music, language, and the like. 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. 9, Do our reaction times slow down with age? Bacteria with a capital B refers to the domain Bacteria, one of the three domains of life. Click here for top-notch IB resources or here to assess how your prep is going! 1. The internal assessment, worth 20% of the final assessment, consists of one scientific investigation. In this post, we outline the different necessary components. Check out some Physics IA ideas here!11, What is the effect of the salt concentration on germination of different types of seeds? The practice of making sourdough is as ancient as bread itself. Test how different household cleaning products affect seed germination! 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 Once spread on the soil, compost and manure are broken down into minerals by decomposing bacteria and fungi, as well as by . Click, See 6 years ago. First is to ensure that there is some biology to explain any hypothesis, and that the RQ is firmly focused in the Biology. Read more about it here. Understanding how a particular abiotic factor affects the biodiversity in a habitat. Independent Variables: Temperature, Sunlight variation, Skimmed vs Whole, Dependent Variable: Rate of bacterial growth (on agar plates), pH of milk. The practical methods to germinate seeds and select appropriate salt concentrations will present definite challenges but this is an interesting study for students living near the coast, or in places where salt is applied to the roads in winter. At the end of a long endurance event cramps and muscle fatigue will be evident but this is not possible to recreate in the lab in school. The Aim answers Why while the Research Question answers the What. Probiotic Frozen Yogurt W. Tungrugsasut1*, C. Wiwat2, V. Srisukh1, K. Thoophaew1, and P. Tippawat1. 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. Still feeling a bit uneasy about the task ahead? 14. To make the experiment more detailed, students can rub collected samples on filter paper to observe which plants present which colors. Can the max performance be measured best using max heart rate or maximum speed? Or find the correlation between the height of one's parents and their own height, then make predictions based on your findings. Using LeafLab - plant physiology/photosynthesis to test the effectiveness of different colours of light on the photosynthesis rate of tomato plants. How do halophyte seeds respond to increasing salt concentrations compared to normal seeds? How do you even choose a topic? 1: Cell Biology 1.1: Introduction to Cells 1.2: Ultrastructure of Cells 1.3: Membrane Structure 1.4: Membrane Transport 1.5: The Origin of Cells 1.6: Cell Division 2: Molecular Biology 2.1: Molecules to Metabolism 2.2: Water 2.3: Carbohydrates and Lipids 2.4: Proteins 2.5: Enzymes 2.6: DNA and RNA 2.7: DNA Replication, Transcription and Translation . Most strands of this bacteria are found to be harmless and even healthy to be part of the human digestive system, however some strands can cause to the development of serious problems like . Get up to 300 bonus credits with our tutoring packages! The effect of pets on the diversity of plants in a garden lawn. Before we dive more in-depth, you might want to check out our, to own your Biology SL papers! One option might be to test the chemicals on small aquatic plants, or germinating seedlings, but there are challenges to overcome here too. Internal Assessments are the perfect way to get students to put their knowledge to use by Observing, Questioning, and Investigating. Of course there will be other factors to consider, for example local feature of the habitat where the plants are growing and the aspect of the flowers' location, not to mention grazing and grass cutting. Contact, Twitter We hope this article will serve as a foundation for you to get going on that IB Biology IA Investigation of yours! 12, What happens after the best-by date of dairy products? This was my Biology HL IA which was given a 21/24 by the IB. Experimental setup: For this experiment, combine a fixed mass of yeast with increasing concentrations of a sucrose solution and measure the rate of CO2 production! A quart-sized bowl works great. This is interesting because the higher concentrations will cause outward osmosis in the yeast and perhaps slow down respiration, or even kill the yeast. Remember that these samples are meant to give direction and ideas.