IB Biology


IBDP Biology is an exciting course that explores the science of life. From the tiniest cells to the most complex ecosystems, you’ll dive into how living things function, grow, and interact with the world around them.

Whether you’re aiming for a career in medicine, environmental science, or just curious about how the human body works, this course will help you build a strong foundation in biology — while also developing critical thinking, data analysis, and lab skills.


The course enables students, through the overarching theme of the NOS, to:

  1. develop conceptual understanding that allows connections to be made between different areas of the subject, and to other DP sciences subjects
  2. acquire and apply a body of knowledge, methods, tools and techniques that characterize science
  3. develop the ability to analyse, evaluate and synthesize scientific information and claims
  4. develop the ability to approach unfamiliar situations with creativity and resilience
  5. design and model solutions to local and global problems in a scientific context
  6. develop an appreciation of the possibilities and limitations of science
  7. develop technology skills in a scientific context
  8. develop the ability to communicate and collaborate effectively
  9. develop awareness of the ethical, environmental, economic, cultural and social impact of science.
Biology syllabus outline and suggested teaching hours by the IB

IBDP Biology Roadmap

IBDP Biology Roadmap. Subtopic marked with HL is only covered by HL students

Biology Posts

Topic 1 Molecules

A: Unity and Diversity of Molecules

Subtopic A1.1 Water
Subtopic A1.2 Nucleic Acids

B: Form and Function of Molecules

Subtopic B1.1 Carbohydrates & Lipids
Subtopic B1.2 Proteins

C: Interaction and Interdependence of Molecules

Subtopic C1.1 Enzymes & Metabolism
Subtopic C1.2 Cellular Respiration
Subtopic C1.3 Photosynthesis

D: Continuity and Change of Molecules

Subtopic D1.1 DNA Replication
    Subtopic D1.2 Protein Synthesis
      Subtopic D1.3 Mutation & Gene Editing

        Topic 2 Cells

        Subtopic A2.1


          Topic 3 Organisms

          Subtopic A3.1


            Topic 4 Ecosystems

            Subtopic A4.1


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