MYP Biology covers cells, organisms, metabolism, genetics, evolution, ecology, human biology, environmental interactions, and biotechnology. Students also learn to design investigations, process data, evaluate evidence, and discuss the consequences of scientific developments.
The IB provides an MYP Sciences framework, not a rigid lesson-by-lesson Biology syllabus that every school follows identically. Schools construct their own units within that framework, while students taking the Year 5 biology eAssessment prepare for a published list of examinable topics.
Is there one official MYP Biology syllabus?
The MYP gives schools flexibility. One school might teach genetics through inherited disease, while another connects it to agriculture or biodiversity. The biological principles can remain similar even when unit titles, contexts, and teaching order differ.
The official IB overview identifies cells, organisms, metabolism, evolution, cycles, and interactions between organisms among the areas explored in MYP Sciences eAssessment. The detailed biology topic list for external assessment groups the content into nine broad areas.
Your school's course outline remains essential. The eAssessment list identifies possible examinable subject matter, but it is not an exclusive curriculum for every MYP school. Students in Years 1 to 4 may also study integrated science rather than a separate Biology course.
The main topics covered in MYP Biology
| Topic area | Content commonly covered |
|---|---|
| Cells | Cell structure and function, tissues, organs, organ systems, physiology, vaccination, and health |
| Organisms | Habitats, ecosystems, classification, biodiversity, interdependence, energy transfer, and nutrient cycles |
| Biological processes | Photosynthesis, aerobic and anaerobic respiration, and biological equations |
| Metabolism | Nutrition, digestion, enzymes, diffusion, osmosis, gas exchange, circulation, homeostasis, and plant transport |
| Evolution | DNA, inheritance, variation, reproduction, mitosis, meiosis, natural selection, biodiversity, and life cycles |
| Environmental responses | Tropisms, senses, receptors, hormones, and the nervous system |
| Interactions between organisms | Food webs, competition, predator-prey relationships, pathogens, parasites, speciation, and extinction |
| Human interactions with environments | Pollution, conservation, habitat destruction, overexploitation, and mitigation strategies |
| Biotechnology | Genetic modification, cloning, genome applications, ethics, and emerging technologies |
Cells and levels of organization
Students study the cell as the basic unit of life. They compare plant and animal cells, connect organelle structure to function, and examine how specialized cells form tissues, organs, and systems.
Cell biology is not assessed through recall alone. You might use a scale bar to estimate cell size, interpret a microscope image, or explain how a cell is adapted to its role. Human health, vaccination, and physiology may also be linked to this topic.
Organisms, ecosystems, and cycles
This area moves from individual organisms to populations and ecosystems. It includes classification, habitats, biodiversity, interdependence, energy flow, and cycles such as the carbon and nitrogen cycles.
Students should interpret unfamiliar food webs and explain how changing one population affects others. Classification should be understood as a system based on shared characteristics, not memorized only as a list of groups.
Photosynthesis, respiration, and metabolism
Photosynthesis and respiration explain how organisms obtain, store, and release energy. Students commonly learn word equations and may use balanced chemical equations where required by their course.
Metabolism also includes enzymes, nutrition, digestion, diffusion, osmosis, gas exchange, circulation, and homeostasis. Plant transport includes transpiration through xylem and translocation through phloem. The RevisionDojo cell respiration resources help connect equations to cellular processes.
Genetics, reproduction, and evolution
Genetics covers DNA, genes, chromosomes, inheritance, and variation. Mitosis produces genetically similar cells for growth and repair, while meiosis produces gametes with half the chromosome number.
Evolution explains how inherited variation and selection pressures change populations over generations. Students must distinguish an individual organism's adaptation from the evolutionary process through which advantageous inherited traits become more common. Use the MYP Biology reproduction topic and inheritance and variation flashcards for focused review.
Coordination and responses
Organisms detect and respond to environmental change through receptors, senses, nervous systems, hormones, and plant tropisms. Questions may ask you to trace a response from stimulus to receptor, coordination system, and effector, or compare rapid nervous responses with slower hormonal communication.
Interactions and environmental impacts
Biological interactions include competition, predation, parasitism, disease, and dependence within food webs. Speciation and extinction extend these relationships across longer timescales.
Human activity is studied through habitat loss, pollution, overexploitation, conservation, and mitigation. Strong answers explain mechanisms and consequences. For example, fertilizer runoff can cause algal growth, reduced light, increased decomposition, and lower dissolved oxygen.
Biotechnology and scientific ethics
Biotechnology may include genetic modification, cloning, genome applications, and emerging technologies such as tissue or organ printing. Students need enough scientific knowledge to explain an application and evaluate its effects.
Effective evaluation considers environmental, social, economic, and ethical consequences. It should identify affected groups and reach a reasoned conclusion supported by evidence rather than merely listing one advantage and disadvantage.
Scientific skills are part of MYP Biology
MYP Biology is assessed through four MYP Sciences criteria, each with achievement levels up to 8:
- Criterion A: Knowing and understanding -- explaining scientific ideas and applying them to problems.
- Criterion B: Inquiring and designing -- developing questions or hypotheses, identifying variables, and planning investigations.
- Criterion C: Processing and evaluating -- presenting and interpreting data, drawing conclusions, and evaluating methods.
- Criterion D: Reflecting on the impacts of science -- analysing how science affects society, environments, and decisions.
Memorizing definitions is therefore only one part of preparation. Practise graph construction, variable identification, hypothesis writing, data interpretation, conclusions, and method evaluation. The official MYP Sciences subject brief outlines these criteria and their connection to eAssessment tasks.
A practical MYP Biology revision method
Use this cycle for each topic:
- Recall the core knowledge without looking at notes.
- Draw or sequence the process, such as osmosis, natural selection, or a reflex.
- Answer an unfamiliar application question rather than another definition question.
- Check the command term, especially describe, explain, analyse, discuss, and evaluate.
- Record the exact error and revisit it several days later.
Your checklist should include content and skills. Do not mark enzymes complete merely because you can define a catalyst. Check that you can interpret an enzyme-rate graph, design a controlled investigation, explain an anomalous result, and evaluate limitations.
RevisionDojo's MYP Biology resource hub organizes Study Notes, Flashcards, lessons, and Questionbank practice by topic. The systems Questionbank supports application practice, while the MYP Sciences curriculum breakdown provides a wider overview.
Common mistakes to avoid
A common mistake is treating MYP Biology as a vocabulary test. Accurate terminology matters, but strong answers connect cause and effect: what changes, why it changes, and what follows.
Saying "water enters the cell by osmosis" may be incomplete. A stronger explanation identifies water moving across a partially permeable membrane from higher to lower water concentration. Match the detail to the command term and marks available.
Students also neglect Criteria B, C, and D. Investigation design, data handling, and evaluation are assessed components, so include at least one skills-based task in every revision session.
Conclusion
MYP Biology covers nine connected areas, from cells and metabolism to evolution, ecology, environmental change, and biotechnology. Exact units differ because schools develop their own curricula, but Year 5 eAssessment candidates should use the published topic list and school guidance to confirm coverage.
Effective revision combines biological knowledge with investigation, application, data analysis, and evaluation. RevisionDojo's general MYP resources, particularly MYP Biology Study Notes, Flashcards, and Questionbank, can support that balanced approach.
Sources and referenced URLs
- IB: Science in the MYP
- IB MYP Sciences subject brief
- RevisionDojo MYP Biology resources
- RevisionDojo MYP resources
- RevisionDojo MYP Sciences curriculum breakdown
- RevisionDojo cell respiration resources
- RevisionDojo reproduction resources
- RevisionDojo inheritance and variation flashcards
- RevisionDojo systems Questionbank
