IB DP Biology Condensed Topic Notes Bundle - Section C Interaction 2026

IB DP Biology: Quick Study Bundle Section C Interaction – Condensed Revision Outline

A helpful, exam-ready resource for teachers and students.

This abridged and structured revision guide bundle is designed to help IB DP Biology students revising Section C: Interaction by condensing key syllabus content into a clear, accessible format. It provides full coverage of required concepts while simplifying complex processes, making it an effective tool for both classroom teaching and independent study.

Why This Resource?

• Covers Every Assessment Statement – Aligned with the IB Biology syllabus to ensure all required content from Section C is included.
• Structured for Easy Review – Information is organised into clear, manageable sections to support rapid comprehension and efficient exam revision.
• Interactive and Engaging – Digital checkboxes allow students to track progress as they complete each revision section.
• Time-Saving for Teachers – Ready to use as a teaching aid, revision sheet, or exam preparation guide with minimal preparation needed.

What Is Inside?

Enzymes – Enzyme structure, active sites, factors affecting activity, inhibition, and reaction rates.

Cell Respiration – Glycolysis, link reaction, Krebs cycle, oxidative phosphorylation, and aerobic versus anaerobic pathways.

Photosynthesis – Chloroplast structure, light dependent reactions, Calvin cycle, limiting factors, and adaptations.

Chemical Signalling – Types of signalling, receptors, transduction pathways, second messengers, and responses.

Neural Signalling – Resting potential, action potentials, synapses, neurotransmitters, and signal integration.

Integration of Body Systems – Homeostasis, feedback systems, and coordination between nervous and endocrine control.

Defense Against Disease – Innate and adaptive immunity, antibodies, vaccination, and pathogen responses.

Populations and Communities – Population growth, interactions, succession, and biodiversity measures.

Transfers of Energy and Matter – Trophic levels, energy pyramids, nutrient cycling, and human impacts.

List of essential keywords and definitions for Section C topics.

This resource is:

• Concise and Effective – Reduces information overload while reinforcing essential ideas.
• Exam-Focused – Covers core IB DP Biology content in an assessment-ready format.
• Versatile Use – Suitable for daily lessons, revision sessions, flipped classrooms, and exam preparation.

Use this revision bundle to strengthen your teaching resources and provide students with a focused, structured approach to mastering the Interaction section of the IB DP Biology course.