databases have two features to help you find search words as well as topics and sub-topics.
Use the "subject guide search" feature in databases to help you find good search terms. .
Use the "topic finder" to help you find good topics and sub-topics
The NSDL is an open access library of digital content relevant to all aspects of hard and applied sciences.
Writing the Essay
An essay in the sciences requires is more than just generating and presenting data. Analysis of the data is also essential. The main body of the essay should consist of an argument or evaluation based on the data or information presented . You can gather your own data through a variety of methods, or rely on secondary data. You should use graphs, tables, or diagrams to point out the significance of your findings.
You should ensure that the main body of the essay is well structured and has an obvious logical progression. You can use numbered and headed paragraphs to impose a clear structure. Your evaluation should show that you understand the the data they have collected and its significance to the world.
In your analysis, you should also describe and explain the limitations imposed on the research by factors such as
Students should also consider biological limitations such as:
Safety and Ethics in Choosing a Topic
In all cases where human subjects are used as the basis for an investigation, clear evidence of informed consent must be provided in accordance with the IB guidelines.
Some topics may be inadmissible because their means of investigation are unethical. For example, investigations that:
Some topics may be unsuitable because of safety issues. Adequate safety apparatus and qualified supervision is required for experiments involving dangerous substances such as:
Other topics may be unsuitable because the outcome is already well known and documented in standard textbooks.
by Antony W
March 13, 2023
Biology Extended Essay is an assignment that requires you to explore biological issue relevant to you and your environment.
Your focus should be on a particular biological emphasis within a broader context of scientific investigation. Given that the focus is on a biological system, you’ll have to make an analytical argument as you write the essay.
In this guide, you’ll learn exactly what you need to know about the IB Biology Extended Essay . Our goal with this lesson is to give you the most important information about the subject so that you can get the assignment done right.
Biology in IB Extended Essay is the examination of living organisms and their life processes. The assignment integrates biological theories and examines the nature of the subject.
While you can approach a Biology EE from varying viewpoints, the treatment of the material used in your investigation must be 100% biological.
The topic you choose to explore in your IB Biology Extended Essay shouldn’t be too broad or too narrow. Make sure you choose a focused topic that’s easy to investigate and easy to explain.
Your teacher expects you to explain how you arrived at your research question, and the best way to do that is to outline the aspects you wish to consider in the essay.
You may also have to formulate one or more hypothesis based on the research question.
The EE guide on the subject recommends that you choose your topics carefully, making sure you refrain from inappropriate topics such as those that are likely to inflict pain, involve the use of dangerous substances, or linked to safety concern.
You should avoid topics whose outcome are either obvious or already well known and documented in textbooks.
You will need to do primary and secondary research for your Biology Extended Essay.
For primary research, you can collect data from fieldwork, surveys, biological drawings, and biological observations.
If you’ve picked topic that requires practical work, you may have to conduct multiple, extensive fieldwork or do lab tests. In such a case, you will have to provide a detailed explanation of the experimental research procedures sued.
When it comes to secondary research, you get data or information from literature.
Some students restate the information they collect from secondary sources, but doing so often adds little or no value to a Biology Extended Essay.
Therefore, the right approach is to analyze the data or information in an original way to add a new dimension and value to your research and to the essay at large.
Whether you do primary research, secondary research, or a combination of both, you need to make sure you have access to enough data or information to answer your research question.
The first step to writing a comprehensive, 4,000-word essay in Biology EE is to use the right scientific techniques to analyze the data you collect during research.
You then have to present your argument or evaluation based on the analysis you’ve completed.
You can include graphs, tables, and diagrams, and make sure you point out their significance in the essay so they’re easy to understand.
As with any other EE, your Biology essay should have a good structure and demonstrate a logical progression. Feel free to use headings and subheadings in the essay because it imposes a concise structure.
Your evaluation of the research questions should demonstrate that you not only understand the results from your experiments but also can explain their significance in a wider academic context.
Since you aren’t sure about what to expect from biological experiments, you may have to account for anomalies or unexpected results in your investigation.
In such a case, you have to provide explanations for the expected outcome and give an alternative explanation for such findings.
The subject also allows you to propose slight or major changes to the hypothesis presented in the essay, in which case you will have to suggest relevant approaches to testing the new changes.
Writing your EE in Biology also requires that you undertake a critical evaluation of the work that you have already done.
The evaluation helps you to identify and explain the limitation of your research by a number of factors including the reliability and validity of statistics, the precision of experimenting equipment and the reliability of sources.
You also need to consider biological limitations of your research. Such limitations are likely to arise from the inability to generalize based on a single form of an organism or problems of control and repeatability when using living organisms in your research.
It’s important to keep in mind that a Biology Extended Essay is not an extension of the Internal Assessment in the same subject. There are a few differences that set the two assignments apart, and it’s important to know them before you start working on the essay.
The student has to analyze the aspects of Biology not covered in the syllabus | The Internal Assessment focuses on the biology aspects taught in the syllabus |
In Biology EE, you have to develop a theoretical framework for the topic you choose to examine | Instead of creating a theoretical framework for the topic, you focus on the application of the methods used to solve a problem |
A student can use primary sources, secondary sources, or both. This means they can base their research on already existing literature | This assignment includes data collection an analysis, which a student can’t base purely on literature review |
The assignment focuses on the ability of an IB student to evaluate scientific arguments. | The assignment assesses the student’s ability to apply scientific methods to solve a biological problem |
Do you need help with your Extended Essay in Biology? Our team of IB experts is here to help you write the 4,000-word essay, even if it’s on a complex topic. You can click here to learn more.
About the author
Antony W is a professional writer and coach at Help for Assessment. He spends countless hours every day researching and writing great content filled with expert advice on how to write engaging essays, research papers, and assignments.
The IBO publishes two volumes of 50 Excellent Extended Essays , covering all Diploma Programme groups -- and all scored a top A grade.
Click on the link below to access PDFs of the essays.
All 50 essays are also available in electronic form in the QD Library on the iPads. Look for the display at the circulation desk. The essays are found in the iBooks app. The iPads are available for check out at the circulation for periods of 30 minutes at one time.
Recently, the IBO has produced another list of exemplars with marks. Click on the link below to access this:
Each year we invite IB alumni to share their experiences, interests and advice with our global community in the graduate voices series. We welcome Diploma Programme (DP) graduate Lim Hui Yuan to share some tips and advice to DP students completing their extended essays after completing her DP education at Hwa Chong International School .
By Lim Hui Yuan
I’m sure all the current and past IB students know the hardship of completing an Extended Essay (EE). And for those who are not familiar with EE, it is actually “ an independent, self-directed piece of research ”, which culminates into a 4,000-word paper.
To many (including me), EE was a real boot camp training because of the effort and tenacity it requires one to possess. Well, it was quite daunting a time for me, BUT—I have to admit that I learned a lot from messing up my project. Looking back, the nine months I spent on my EE was indeed an endurance experience.
Here are my takeaways from almost failing my Biology EE. Some of them might be relevant to other EE subjects, but they mainly revolve around the challenges I personally faced.
They always say, “follow your heart”
“Pick a project topic that you are interested in.”
Sometimes, we might not even know what our heart wants and where our interests actually lie. We students face a dilemma when choosing an EE subject or topic in the same way we are confused when standing at the junction of deciding which university path to choose.
There is a plethora of topics that we could work on, but not all of them could keep us motivated for more than half a year. I chose, “The Efficacy of Natural Plant Extracts and Commercial Disinfectants in Reducing Bacterial Growth.”
I like to think of it like becoming a gardener. Your project starts off small, you have to nurture it, and once the research topic is settled, it just keeps growing. In the end, you’ll have an EE that has grown from just a tiny seed into a big plant you are really proud of.
Nevertheless, I came to realise that no matter what topic you choose, as long as you pour your heart into it, you will not regret the outcome.
Asking yourself, “ why do I want to do this project?” helps to keep you on the right track (even if the answer was “to get a good grade”).
After diving into my biology EE, I realised how easy it was to carry out experiments in class compared to conducting your research project. There’s no lab manual you can simply refer to. Instead, you have to create your own recipe , adapting from previous work. And since it’s your own custom-made experiment, you can never predict how the results will turn out.
As much as you try to fix the controlled variables, it seems like you can’t control the outcome of the study.
In my case, I expected some of the plant extracts to show antibacterial properties. However, I underestimated how mischievous the bacteria can be, contaminating all my plant samples.
I took the success of the experiment for granted.
This bump went on for over five months. At one point, I was so traumatised by the lack of progress that I couldn’t bring myself into the lab. Frustrated and drained, I was on the verge of giving up.
Here’s when you should take a breather to flush away the negative emotions and reset everything—including your impression of the project itself.
Just as the wise Ryan Higa mentioned, “ here’s a bridge; now, get over it ”.
Whatever will happen has happened and all you can do is to move on.
After getting yourself ready for a fresh start, you should turn on troubleshoot mode and make amendments to your procedures. Try to pinpoint the problem and then search for plausible solutions to tackle it. The trial and error method is the only way!
Imagine beginning to piece a puzzle together; you usually know what the big picture looks like first before connecting the parts. The same applies to your EE. Plan ahead.
Set mini-deadlines as you draft your action plan. The timeline is essential so that you don’t feel too overwhelmed by a load of work (especially when you have a month left to write your EE after getting your results, which was exactly my case).
Be careful not to be too optimistic with the progress of your experiments. I expected and planned that mine would take at most two months to finish, but I completely neglected some time factors such as time needed for the bacteria to incubate, to make the agar plates, the opening hours of the lab (which leaves me only a few hours after school), and of course , failures.
You may have a supervisor to nag you about your EE progress. However, once you’re out of high school, nobody will be there to alarm you and snoozing off will cost you more than just your grades.
If it weren’t for my EE supervisor and friends, I would’ve given up.
My EE supervisor kept encouraging me and taught me how to endure an initial lack of results, and I’ve learned since then that this is actually a norm of scientific research . One of my best friends, who was also doing a biology EE, took his time to teach me how to write a biology EE amidst his busy schedule (you know who you are, thank you!).
Remember to discuss your difficulties to your advisor or friends; they’ll be your pillar of support.
EE is not only here to prepare you for undergraduate research, but also provide a resilient attitude for life, in general.
Honestly, I’m quite grateful that I faced so many problems during the process. It feels like playing a game with many obstacles and overcoming each hurdle leads you to a higher-level ranking. I am, by no means, a “Legend”, but I’ve certainly passed the “Rookie” level.
P.S. Remember to pat yourself on the back after completing your EE. After all, you’ve shed blood, sweat and tears into raising your seedling into a plant.
Lim Hui Yuan is a graduate of Hwa Chong International School , Singapore. She is currently pursuing her degree in science, specifically a major in Molecular Biology and Biotechnology, at the University of Hong Kong. She likes to experiment with new things and loves dancing and cooking. Also, you can find her binge-watching dramas most of the time.
To hear more from Diploma Programme (DP) graduates check out these IB programme stories. If you are an IB grad and want to share your story, write to us at [email protected] . We appreciate your support in sharing IB stories and invite you to connect with us on LinkedIn , Twitter and now Instagram !
If you enjoyed this story, consider reading more below:
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Extended essay frame and word citation tool.
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Here’s a document we are using in my Extended Essay group . The intention is that students set it up from day 1, keeping all of their reading and research in a section at the end which will allow them to build their citations database. This section of notes will be deleted before final submission, unless any of the resources they save are worthy of an appendix.
By this point, students have read the examiners’ reports for their subject area EE’s, looked at some excellent examples ( on sale in the IB store ) and have read carefully through the EE guide, noting the subject-specific guidance for each criterion.
At the end of the document is a set of rubrics for self-assessment, which they should refer to on a regular basis. I have set it up so that they can add their own checkboxes above each rubric, listing what is most important for them to achieve.
There is a screencast below the document which gives a very quick introduction to using the Word citation manager.
Check out these great resources from Purdue’s OWL project on APA citation .
What I would love to see
If I could make one request of the IB, it would be that rolled into our programme fees for DP we could have access to university-style academic searches and journals. Wouldn’t it be great if the IB subscribed to the journals and schools could access them through Athens or Springerlink (or something else), to use in EE’s and research?
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Notes for various ib subjects as well as some musings on biochemistry and oncology, biology extended essay (31/36 – a).
Extended Essay
2 thoughts on “ biology extended essay (31/36 – a) ”.
Hi, I’m doing my EE in biology too and was wondering where you lost marks? Like which criteria. Just curious because it seems like a perfect essay. I personally won’t be able to include all the statistical analysis you did as my experiment ended up being a dud. 😦
Like Liked by 1 person
Hi there, I’m very humbled that you think that! Looking back, I would guess that certain parts of my evaluation may have been shaky in the eyes of sharp examiners. There’s no need to go overboard with the statistics, but it’s useful to show some level of analysis so any readers can understand the validity of any conclusions you’ve drawn.
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EE Biology B. What is the effect of seawater mixture (0%, 5%, 10%) on the germination of black chickpeas (Cicer arietinum), Green Gram (Vigna radiata) and Fenugreek (Trigonella foenum-graecum) for 5 days and their subsequent growth when watered using tap water for 10 days where growth was measured by plant height (±0.05 cm) and dry mass (±0. ...
Here is a range of sample topics with the attached extended essay: Biology: ... 40+ Sample Extended Essays for the IB Diploma Programme. In case you want a little more guidance on how to get an A on your EE, here are over 40 excellent (grade A) sample extended essays for your reading pleasure. Essays are grouped by IB subject.
IB Extended Essay: Past Essays. EE Home; Lessons Toggle Dropdown. Research Questions ; Past Essays ; ... Renaissance Library Past Essays: Links to all subject area examples; Music EE Examples. Music EE Example 1 Music EE Example 2 ... Biology EE Examples. Biology EE Example Biology EE Example 1
2016-2017 IB Extended Essay; Sample IB EE's; Search this Guide Search. 2016-2017 IB Extended Essay: Sample IB EE's. Home; Workshops Toggle Dropdown. Workshop 1: Getting started ; ... Biology (2018 new rubric) Biology Light Intensity. Does Age Have an Effect on Short-term Memory of 6 to 18 Year Old Students? Biology 1. Chemistry:
These highlight the diverse range of topics covered by International Baccalaureate® (IB) Diploma Programme (DP) students during their extended essays. Some examples are: "An analysis of costume as a source for understanding the inner life of the character". "A study of malnourished children in Indonesia and the extent of their recovery ...
In a Biology extended essay express the purpose of the essay as a question. This is will take the form of a carefully composed question that the research will attempt to answer. For example, a statement of the topic of an essay might be "Factors that affect moss growth on tree bark"; the research question • • • • • •
High scoring IB Extended Essay examples for all subjects. See what past students did and make your EE perfect by learning from examiner commented examples! Exemplars. Review. Login. JOIN FOR FREE. ... EE Biology A. To what extent do different concentrations of Magnesium Nitrate (10, 20, 30, 40, 50 mM) affect the concentration of chlorophyll a ...
Choosing a Topic. Biology is the science that deals with living organisms and life processes. A biology EE should incorporate biological theory and emphasize why it is relevant today. The topic must relates specifically to biology. Many topics can be approached from different viewpoints, but for an EE in biology the treatment of the topic must ...
Biology in IB Extended Essay is the examination of living organisms and their life processes. The assignment integrates biological theories and examines the nature of the subject. While you can approach a Biology EE from varying viewpoints, the treatment of the material used in your investigation must be 100% biological.
The IBO publishes two volumes of 50 Excellent Extended Essays, covering all Diploma Programme groups -- and all scored a top A grade. Click on the link below to access PDFs of the essays. 50 Excellent Extended Essays; All 50 essays are also available in electronic form in the QD Library on the iPads. Look for the display at the circulation desk.
The extended essay is an independent, self-directed piece of research, finishing with a 4,000-word paper. One component of the International Baccalaureate® (IB) Diploma Programme (DP) core, the extended essay is mandatory for all students. Read about the extended essay in greater detail. You can also read about how the IB sets deadlines for ...
One requirement of the International Baccalaureate® Diploma Programme core, the extended essay is an independent, self-directed piece of research, finishing with a 4,000-word paper. According to the IB, "t he extended essay provides: practical preparation for undergraduate research. an opportunity for students to investigate a topic of ...
I'm sure all the current and past IB students know the hardship of completing an Extended Essay (EE). And for those who are not familiar with EE, it is actually " an independent, self-directed piece of research ", which culminates into a 4,000-word paper. To many (including me), EE was a real boot camp training because of the effort and ...
An extended essay in biology provides you with the opportunity to apply a range of skills while researching a topic of personal interest in the field of biology. Adapted from the IBO Extended Essay Subject Specific Guide for Biology. Choice of Topic. It is important to choose a topic that has a CLEAR BIOLOGICAL EMPHASIS, and is not more closely ...
An extended essay in biology provides you the student with an opportunity to apply a range of skills while researching a topic of personal interest in the field of biology. The nature of an extended essay in biology is characterized by a particular biological emphasis within the more general context of a scientific investigation. Choice of topic.
All extended essays are externally assessed by examiners appointed by the IBO. All extended essays are marked on a scale from 0 to ... The topic of the biology EE must be outlined at the start of the essay and should clearly establish the context of the research question. ... For example, an essay's topic may be "Factors affecting the ...
Excellent Extended Essays - Biology. Are commercial methods of oral rinse (mouthwash) more effective than the traditional methods of oral hygiene (tea, sesame oil, baking soda, myrrh) in preventing the growth of Micrococcus luteus? (2012) A study on the effect of Indole acetic acid, a growth hormone, on the growth of crop plants, rice (Oryza ...
For example, an extended essay in an interdisciplinary area such as biochemistry will, ifregistered as a biology extended essay, be judged on its biological content, not its chemical content. Essays that deal with human diseases represent a particular case in point, as these can often be dealt with ...
Discover How Hong Kong's 2022 E-Cigarette Ban Impacts Public Health And Economy In This Insightful IB Economics HL Extended Essay Sample. Dive In For Key Insights! Economics HL. A. 116 Likes. ... Discover How Substrate Nature Influences Fermentation Rates In This Comprehensive IB Biology SL Sample Extended Essay. Biology SL. B.
Hyperplasia is an increase in cell count, causing an enlargement of a. tissue or organ (Mukherjee, 2010). It is a key process for the growth of an. organism. The 3 major factors influencing hyperplasia would appear to be. potassium, nitrogen and phosphate concentrations.
IB Store. Here's a document we are using in my Extended Essay group. The intention is that students set it up from day 1, keeping all of their reading and research in a section at the end which will allow them to build their citations database. This section of notes will be deleted before final submission, unless any of the resources they ...
Extended essay This session there was, as expected, a greater than normal share of theoretical essays (based on secondary data), or in some cases essays based on some minimal lab work supplemented by an analysis and evaluation of secondary data. The assessment per se was not affected, as it has always been a permitted approach.
HL Biology IA (23/24) Biology Extended Essay (31/36 - A) IB Chemistry. IB Chemistry Notes. HL Chemistry IA (23/24) IB Mathematics. IB Mathematics Notes. HL Mathematics IA (18/20) IB English A: Language and Literature.