Bacterial Growth and Nutrition | Biology Ideas | Microbiology Media June 22, 2021 by Ruturaj Mundhe Culture media and Bacterial Growth Bacterial Growth and Culture media are solid, semisolid, and liquid nutrient preparations employed for the cultivation of microorganisms. Before we dive more in-depth, you might want to check out our premium IB Biology SL Notes to own your Biology SL papers! They are produced in nature by soil bacteria and fungi. Biology Labs Online have the potential for making biology education more interactive, effective, and fun!Biology Labs Online is a collaboration between the California State University system and Pearson, Inc.You can access these here https://sciencecourseware.org/BiologyLabsOnline/ (Thanks to Sarah Kelley for the link), Lab bench fly breeding lab Breeding Drosophila, fruit flies. This is nice project if there is a specific environmental gradient in the site being investigated. Follow the steps here to extract the DNA. www.thinkib.net. Do individuals of different types all behave in the same way to a stimulus. 30, Exploring mollusc shapes with regards to an external variable e.g. CareerBuilder TIP. These ideas are for you to start exploring and begin! The internal. Of course the underlying processes are controlled by enzymes, or the fruit ripening hormone ether. Copyright 2023 Nail IB. Your Research Question and the Aim of the Investigation are separate sub-headings with different implications. 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. 2.1.2 Salt Doenjang is incubated at different salt concentration, controlled by the amount of sodium chloride dissolved in 100 ml of . 19, What is the difference in the CO2 levels exhaled before and after enduring physical exercise? IA Biology HL 6 Then is is going to be a challenge to design a method of data collection which controls all the possible variables. Different abiotic factors affect the growth of different plants, test the different conditions and then note how plant species change in their presence. Bananas lend themselves to this because their skin changes colour. Perhaps another research question will be better, something linked to hormones, or to physical activity. opening the floodgates to that sweet 45! Biology IA Checklist for HL & SL The International Baccalaureate Biology Internal Assessment makes up 20% of the final grade achieved by Biology HL and Biology SL students. Change the different conditions in which the plants are found as well as the species. However it could be really interesting to compare simple behaviour in animals. Enter your email and tell us where to send them! 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. 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. You can find more information here, Independent Variable: Different Antibiotics, Different Seeds, Dependent Variable: Success of Germination, Rate of Germination. This is an interesting quantitative method to estimate glucose concentration. Using the pipette dropper to suck in 10 ml of the 3% hydrogen peroxide . Exploring root hair cells and finding their visibility with age. 17, What is the effect of pests on the diversity of plants in a lawn? Investigating how the concentration of RuBisCo in the leaves of a plant species varies with varied exposure to sunlight. 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! Pay attention to one that is interesting for you, and that you might have ideas on how to develop the topic on. Reference to Course: Molecular Biology(Enzymes). 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. It is thought that there may be some aggressive behaviour depending on the qualities of the sportsman, trainer's tactics, and sports fan and media pressure. How does different conditioners affect the strength of hair? 6 years ago. There are also many factors to consider in the type of reaction speed test that is used and there are also problems associated with the learning of the skill during the experiment. Also, be sure that you know all of the rules and regulations for your particular science fair before you begin your project. Read more about quadrat sampling here, Independent Variable: Soil pH, Nitrates in Soil, Oxygen concentration, Dependent Variable: Presence or absence of certain species. Pour the bacteria onto the solidified agar plate. 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. Nice to see you here. The data must be analysed by the student and tables / graphs etc. NOTE: These topics are purely meant as inspiration and are not to be chosen blindly. Posted October 26, 2015. Decomposition is crucial to the cycling of elements, such as carbon from one living organism to another. Brian and also Louis G. Nickell and Alexander C. Finlay in the Journal of agricultural and Food chemistry, 2015. At Lanterna we have hundreds of tutors who smashed Biology. at which many forms of bacteria thrive [9]. In some other cases E. coli can also cause urinary tract infections. Halophytes grow in Salty conditions whereas normal plants dont. Then, add some liquid soap (like the one you use for washing the dishes), juice from a grapefruit, and . newsletters and promotional offers. 1. It is important to set the Research Question in the background of the chosen topic. This is an investigation to test a hypothesis that reaction time wll slow down with age. Coli bacteria using a micro pipette. Is it possible to increase brainpower? This begs the question, is there an ideal concentration of sucrose for yeast growth? Right from neurobiology to the fascinating subjects of the immune system, MyAssignmnethelp.com covers a wide range of biology research topics. which are specifically designed for self study and revision. Does the behaviour of an animal change as the population increases? I got a 7 for Biology HL and my IA was awarded a 22/24. We hope this article will serve as a foundation for you to get going on that IB Biology IA Investigation of yours! Along with a bundle of, with helpful examples! Comparing boys and girls for example will be impossible, unless the sample size is very large. Challenges: Providing biological context for why youre measuring certain factors. Citing documents/web pages and giving references is another important aspect of your IA that needs to be taken care of. Dependent Variable: Rate of Seed Germination. IA Review. Internal Assessments are the perfect way to get students to put their knowledge to use by Observing, Questioning, and Investigating. Give us the email address you use to log in to Lanterna and well send you instructions for resetting your password. The Aim answers Why while the Research Question answers the What. The internal assessment requirements are the same for biology, chemistry and physics. There are some quite nice online tests of colour vision, and also many telephone apps. should include all the normal conventions of d.p. . This is a simple idea, but the explanation is more complex, and this might be the challenge of this particular investigation. 3. The distinctive features of human physiology. Lots of plant ideas in the questions and answers, https://sciencecourseware.org/BiologyLabsOnline/, Mean arterial pressure calculator online -, Sciencelab Chemical data sheets MSDS (Materials Safety data sheets). These microbes assault the nourishment scraps that stick to, and in the middle of our 2 teeth. You will find 100 topics on various subjects below. How does the percentage of salinity in water affect the rate of growth of radishes in mass? classes to learn/preach! This investigation is a bit biochemical and the answer to simple research questions about the hydrophobic / hydrophyllic properties of photosynthetic pigments themselves would be a little bit obvious, so the challenge is to thing of a research question that could be answered by mixing petroleum ether (a nonpolar solvent) and propanone (a polar solvent) in different proportions and calculating retention factors. Clearly state your interest. Top 80 Most Common IB Biology Exam Questions. Which pigments are made first in a growing leaf, or are all the pigments made at the same time? Then use agar plates and bacteria to test their effectiveness by seeing how many bacteria grow in the different plates! I investigated the change in mitotic index that occurred in onion root tips when they germinated in solutions of differing K+ ion concentration. Natural selection - lab bench Which type of water fleas escape predators best? All rights reserved. Fear not, we have elite Biology tutors that can assist you through the process IB Maths is a struggle for most people going through their diploma. 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. How do different concentrations of lactases affect the breakdown of disaccharides like lactose in milk effectively? Experimental setup:Find a xerophyte (eg. Pease comment on broken links and suggest alternative ideas in the comments. to inspire and stimulate your grey cells! Independent Variables: Temperature, Sunlight variation, Skimmed vs Whole, Dependent Variable: Rate of bacterial growth (on agar plates), pH of milk. Dependent Variable: Respiration Rate (measure with respirometer or gas probe detecting CO2 formation. NOTES: Probiotics eat the lactose in milk through fermentation. A 125ml bottle of nutrient agar contains enough to fill about 10 petri dishes. This is a list of possible sites for students to use as online labs. Read more about it here. This is a great idea, but it could be complex and time consuming depending on the lab. Different plants that live in different conditions will have different requirements for gas exchange. How does extract of the seeds and the leaves of the moringa plant (herbal medicine) show antifungal activity against the Malassezia yeast (Pittosporum) fungi that causes dandruff?
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