4, How does varying the gel concentrations of agarose affect DNA migration through a gel? It is very easy to extract DNA at home just using everyday kitchen supplies. Then is is going to be a challenge to design a method of data collection which controls all the possible variables. A Selection of Topics for a Biology Essay. Sometimes sites go ofline or change their address. 0. For strict autotrophic organisms - Only inorganic compounds. But how do we get started on a lab report and, crucially, what should we write about? IA Descriptors-1 - IA Descriptors for IB Biology; PDB-101 Molecule of the Month Ribosome; Hardy-Weinberg equation - example; Biology paper 1 HL n19; . 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 Lower concentrations will slow respiration because of a lack of substrate. So there we have it! This sounds like an easy investigation but it is tricky because first there needs to be some biological reason why the heart should speed up in the presence of music and this is impossible to explain with IB Biology. Read more here, Dependent Variable: Rate of transpiration (measure with a Potometer), Challenges: Getting the plants, Setting up a Potometer. Clearly state your interest. 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! In this investigation a change in a physiological feature is explored. You can visit www.ibbiologytutors.com to register for a FREE demo session.. 6 years ago. Independent Variables: How temperature affects transmission viral diseases, How different methods of transmission affect rates of spreading, Challenge: Statistical analysis Website with loads of data on infectious disease: http://globalhealthgovernance.org/blog/2017/12/1/how-to-find-data-on-infectious-disease-outbreaks, Use online colour vision tests to see how different factors affect colour blindness. Ecological techniques and quadrat sampling could be used together with mapping of digging or scratching to establish whether the presence of a pet increases plant diversity or not. Read more about it here. These are just some of the questions which will need answering. Independent Variables: Different toothpaste manufacturers (Colgate vs Sensodyne vs Crest vs Aquafresh), Dependent Variable: Success of bacterial growth (seen by growth on an agar plate), Milk goes off because of lactobacilli reproduction and growth. Here is a list of top 22 Biology Internal Assessment (IA) ideas: IB ++tutors is a Canadian company that is committed to providing global, high-quality IB private tutoring services by IB expert tutors. Using LeafLab - plant physiology/photosynthesis to test the effectiveness of different colours of light on the photosynthesis rate of tomato plants. Proper research on your part is a bare minimum, and the rest follows. Lots of scope but not an easy investigation to complete in the time, in 12 pages. investigation should cover a topic that is commensurate with the level of the course of study. The different pH levels are pH 1, 3, 5, 7, 11, and 14. 24. A clear RQ is essential and there are quite a few possibilities. Without further adieu, lets dive headfirst into 30+ IB Biology IA ideas for your Biology IA Investigation! Click here for top-notch IB resources or here to assess how your prep is going! While it is an interesting idea, like the example above there are many factors to control in this investigation, which is an interesting modification of a standard lab looking at exercise. Auxin hormone is largely responsible for controlling the direction of plant growth. Perform the relevant analysis, keeping in mind the research question, and conclude. Exploring how the height of plants is affected by Nitrogen or Fluoride based fertilizers used. Many say that as we get older, our reaction times slow down, see if this is true! promotional emails that we send to you. Toothpaste is supposed to block bacterial growth. It is known that you should have at least 25 samples of data for your Biology IA, but let us explain why. There are lots of practical problems to overcome, most importantly how to change the soil so that it has different amounts of respiration. 1678+ Video tutorials, 1226+ PDF IB Resources, 195+ Sample IAs, 148+ EEs, 8777+ Sample questions, 653+ quizzes, IB How do different concentrations of lactases affect the breakdown of disaccharides like lactose in milk effectively? On this note, we wish you all the very best for your IB Biology IA Journey :). It is important to set the Research Question in the background of the chosen topic. Facebook Then use agar plates and bacteria to test their effectiveness by seeing how many bacteria grow in the different plates! 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. 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. Sitting in that quiet corner, sipping on hot chocolate hoping it rains IB Biology IA ideas, instead, going blank and utterly confused? Your Ultimate Guide for Acing IB Psychology Paper 2, The Perfect Guide to Earn a 7 in your IB Psychology IA, The A to Z Guide for Structuring your TOK Essay for Optimal Success, 7 Different Ways to Make the Most of your IB DP Y1 Winter/Summer Break, How to Stay Sane: A Promising Guide to Stress Management in the IB DP. Processes such as diffusion and osmosis as well as the effect of chemicals on components of cell membranes, or on enzymes could be included in the theory. terms of service. using potassium permanganate and heating, from a protocol from Science & plants for schools. The internal assessment requirements are the same for biology, chemistry and physics. This investigation might sound simple at a first glance but there are many difficulties to overcome in terms of controlled variables and the method of measuring the CO2. Independent Variable:Temperature, Oxygen availability. In addition to that, the IA explores how inhibitor ethanol affects the rate of the reaction. Different abiotic factors affect the growth of different plants, test the different conditions and then note how plant species change in their presence. I investigated the change in mitotic index that occurred in onion root tips when they germinated in solutions of differing K+ ion concentration. How effective are synthetic antibacterial products compared to natural antibacterial products against the growth of Cut bacterium acnes? At this point, all apparatus should have been properly set-up and the experimentations should be able to commence. Also, be sure that you know all of the rules and regulations for your particular science fair before you begin your project. Its very important that you consider if whether you can apply these topics to your own life, as this shows personal engagement. Practical procedures and controls will be the challenge, but data should be easy to record if the seedlings grow. 29, Determining the effect of time on the plasmolysis of potatoes, 30, Exploring mollusc shapes with regards to an external variable e.g. It is a complex branch of biology that studies the smallest units and the living organisms. Controlling other factors which affect germination and collecting a large enough data set will also be good challenges for a Biology student to work out. 14. NOTE: These topics are purely meant as inspiration and are not to be chosen blindly. Exploring root hair cells and finding their visibility with age. 15. , its objectives, partwise breakdown, and what IB expects of you. Atriplex amnicola) and expose them to increasing increments of independent variables, observing how their transpiration rates change. IB Biology IA topics: Biology being a scientific course encompasses a lot of investigation and research. But how do antibiotics affect the growth or successful germination of plants? We use cookies to ensure that we give you the best experience on our website. Reply 7. Plot this data with A on the Y-Axis and wavelength in nm on the X-axis. Click, See Go through several IA ideas to understand what all topics are in sync with the IB Biology curriculum and if something grabs your attention, hold on to it! There needs to be some clear links to the biology of blood pressure and how exercise affects it. Avoid this type of investigation, . 30, Exploring mollusc shapes with regards to an external variable e.g. Citing documents/web pages and giving references is another important aspect of your IA that needs to be taken care of. Measuring the change in iron levels of avocados as they go through different ripening stages 25. If there are any ethical implications to your report, how do you plan on minimizing the environmental impact of your experiment?. Using the pipette dropper to suck in 10 ml of the 3% hydrogen peroxide . First is to ensure that there is some biology to explain any hypothesis, and that the RQ is firmly focused in the Biology. Independent Variable: Temperature, Salts, Humidity, Oxygen availability, Dependent Variable: Rate of Decay measured by pH, mass or temperature change. The procedure used should be well structured. 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! Pour 250 ml hydrogen peroxide of 3% concentration into the 300 ml glass beaker. These five biology research topics are for graduate-level students, catering specifically to those in top programs around the country: What evidence is there of a pandemic that can wipe out half of the world's population? Experimental setup:Find a xerophyte (eg. Plants also play a significant role in the environment by influencing climate and producing life-giving oxygen. This is a simple experiment to carry out, but a difficult experiment to get good controlled data for. Decomposing bacteria and fungi are organisms that help the process of decomposition. Coli bacteria using a micro pipette. How does the concentration of zinc chloride affect the growth of plaque? tillu22. Or find the correlation between the height of one's parents and their own height, then make predictions based on your findings. Koreans eat kimchi year round, enjoying its spicy taste and the fact that it contains loads of vitamins B and C. In this cooking and food science fair project, you will make kimchi from scratch and investigate changes in pH and glucose as the kimchi ferments. If you insist on trying this then be sure to cover the control of variables, there are a lot which can affect the heart. The intra-abdominal Campylobacter infection model facilitates the characterization of peripheral blood leukocyte . An IB Internal Assessment is an individual assignment assessed by a subject teacher following a given set of criteria to guide, construct, and evaluate the finished assignment. Internal Assessments are the perfect way to get students to put their knowledge to use by Observing, Questioning, and Investigating. 5 years ago. there Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew Independent Variable: Light exposure, Different Species, Atmospheric CO2 concentration, Dependent Variable: Stomatal density (seen under the microscope). Of course the underlying processes are controlled by enzymes, or the fruit ripening hormone ether. To what extent does the mass of sodium nitrate powder have an effect on the quality of beef as a preservative. Toothpaste is labelled according to how natural or how chemical the contents are. Challenge: Gathering enough data, Pollution affecting species growth. What brand of laundry detergent is the most effective in the digestion and removal of lipid stains? IB HL Biology IA Proposal - The effect of lactase on various percentages of milk The digestive - Studocu the effect of lactase on various percentages of milk the digestive enzyme lactase breaks down sugar in milk called lactose, in order to produce glucose. When it comes to selecting from several IB Biology IA ideas for your investigation, it is essential to note that your IA would either require you to: Either way, you have to connect to your topic and portray personal engagement as it lays the foundation for the rest of your investigation. Of course, you can use any of our topics for free. What effect does temperature have on the ripening process of a fruit?. I did one on predator-prey relationships and in the end I modelled two sine graphs. Comparing the buffering actions of various substances: antacids, milk, sodium bicarbonate, sodium carbonate, detergents, etc. Your Research Question and the Aim of the Investigation are separate sub-headings with different implications. 8, How do the buffering actions of milk, yogurt, juices, detergents etc. Increasing sucrose concentration makes more sugar available for Cell Respiration but it also draws water out of yeast by osmosis, which could kill it. Experimental setup: In this ecological experiment, you will use quadrat sampling to test how successfully different plant species grow in environments. 28, How do different antibiotics interact with the process of seed germination? What are you waiting for? Independent Variables: Temperature, Sunlight variation, Skimmed vs Whole, Dependent Variable: Rate of bacterial growth (on agar plates), pH of milk. Read more about it here. Originally Answered: what are some examples of good biology IA's? You have to show that the data has been carefully selected, and that measures have been taken to ensure that other factors which might affect the data have been controlled, by careful selection of the data used.
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