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IB Biology (HL)

IB Biology (HL) Resources

Below you'll find IB Biology (HL) resources made by students who’ve already taken the class. Click through Biology (HL) study guides, notes, and practice materials designed to help you get a 7 on your IB Biology (HL) papers.

IB Biology (HL) Cell biology

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IB Biology (HL) Molecular biology

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IB Biology (HL) Genetics

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IB Biology (HL) Ecology

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IB Biology (HL) Evolution and biodiversity

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IB Biology (HL) Human physiology

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IB Biology (HL) Nucleic acids

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IB Biology (HL) Metabolism, cell respiration and photosynthesis

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IB Biology (HL) Plant biology

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IB Biology (HL) Genetics and evolution

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IB Biology (HL) Animal physiology

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IB Biology (HL) Neurobiology and behaviour

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IB Biology (HL) Biotechnology and bioinformatics

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IB Biology (HL) Ecology and conservation

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Videos about IB Biology (HL)

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Questions & AnswersIf you have any other questions - please get in touch

What is the IB Biology (HL) exam format?

IB Biology HL has internal and external assessments: the IB external assessment is the part you do on test day and the IB internal assessment is usually a project or a presentation you have to work on ahead of time. For the external assessments: Paper 1 - multiple choice and data-based questions; will take you 2 hours (worth 36% of your final grade) Paper 2 - data-based, short-answer, and extended-response questions; will take you 2 hours 30 minutes (44% of your final grade) For the internal assessments: Scientific investigation; will take you 10 hours (worth 20% of your final grade) To make sure you’re prepared enough to finish in time, take a look through the IB Biology Syllabus and our free IB Biology resources that cover the most important material you should know.

How is IB Biology (HL) scored?

IB exams are scored using a combination of internal and external assessments. The IB score range is 1 to 7, with 7 being the highest. External assessments, such as the written exams, are marked by external IB examiners, while internal assessments, such as projects or oral presentations, are graded by the student's teacher and then moderated by IB examiners. The scores from different assessments are combined, and students may earn up to 42 points from six subjects, with an additional 3 points available from the Theory of Knowledge (TOK) and the IB Extended Essay, for a maximum total of 45 points.

How do I study for IB Biology (HL)?

You’ve likely covered a lot of material during your course this year, but to get a 7 on the International Baccalaureate exam, it’s important you understand how often each topic shows up. Once you take a look through the breakdown below, make sure to read through the IB Biology (HL) study guide above with all the key points you should know for each unit. The IB Biology (HL) revision notes are made by other students who already took that class. After that, run through the IB Biology (HL) flashcards to practice important terms you should know for the exam. You can also do some test prep using the tests attached to each note. There’s a lot of IB Biology (HL) resources for you to shuffle between until you find the method that works best for your learning style. Make sure to start ahead and leave enough time to practice.

What units are on the IB Biology (HL) exam?

When approaching your IB Biology exam review, take some time to understand how the different units are actually broken up so you can place the right emphasis on each one.
Unit 1: Cell Biology
Unit 2: Molecular Biology
Unit 3: Genetics
Unit 4: Ecology
Unit 5: Evolution and Biodiversity
Unit 6: Human Physiology
Unit 7: Nucleic Acids
Unit 8: Metabolism, Cell Respiration and Photosynthesis
Unit 9: Plant Biology
Unit 10: Genetics and Evolution
Unit 11: Animal Physiology
Unit 12: Neurobiology and Behaviour
Unit 13: Biotechnology and Bioinformatics
Unit 14: Ecology and Conservation

How do I get a 7 on IB Biology (HL)?

IB Biology HL requires strong problem-solving abilities, critical thinking, and a solid understanding of biological concepts. You’ll need to master topics such as cell biology, genetics, ecology, evolution, and human physiology, while applying them to both theoretical and practical scenarios.

What are the video resources?

We’ve handpicked some of our favorite YouTube channels and videos that align with the key topics and themes covered in our IB Biology HL study guides. These channels can be a great way to get a better understanding of fundamental topics such as cell biology, genetics, ecology, and human physiology. Experience practical learning through laboratory experiments and interactive classroom activities, while employing scientific methods to tackle biological challenges and real-world applications.

Where can I ask IB Biology (HL) questions?

Connect with other like-minded students who are also preparing for the exam and delve into the world of IB Biology (HL) review together. By joining our Discord community, you can collaborate, exchange questions, discuss IB Biology (HL) revision notes, and discuss any tricky problems with fellow IB Biology (HL) students. Together, you can better understand challenging concepts, share helpful IB Biology (HL) resources, and support each other on your way to getting a 7!

What is IB Biology (HL)?

IB Biology HL explores essential subjects like cell biology, genetics, evolution, ecology, and human physiology. Engage in hands-on laboratory work and class activities to actively investigate these concepts, using critical thinking and scientific methods to tackle both practical and theoretical biological challenges. On this page, you’ll find IB Biology HL resources to help you with your IB Biology HL review.