IB DP Biology Companion Notes & Revision Bundle Topics C1.2 - D4.3 (2026)

A Helpful Bundle for Teaching and Revising Topics C1.2 to D4.3 of IB DP Biology This is Part 2 of the IB DP Biology Teaching Notes & Revision bundle. It includes the next 20 topics from the IB Diploma Programme Biology course, covering both Standard Level and Higher Level (HL) content. The bundle is designed for dual use: as supplemental companion notes for instructors and as revision material for students. What Makes This Bundle Useful for Biology Teachers Follows the Subject Guide Directly. All topics are structured in full alignment with the IB Biology subject guide, ensuring that required assessment statements across core and HL topics are addressed. Teachers can use this sequence to plan lessons that progress logically from DNA structure and function to evolution, ecology, physiology, and modern biological systems. Helpful for New Teachers This bundle provides a clear and practical foundation for teaching the later units of IB Biology. Each topic includes ready-to-teach notes with diagrams, models, explanations, worked examples, and context-linked applications that make complex concepts accessible. Clear Support for End-of-Year Revision This bundle is excellent for end-of-year revision sessions because it brings together key concepts, terminology, and diagrams that students must consolidate before assessments. It functions effectively as a focused review tool during exam preparation weeks. Designed for Dual Use Teachers can use this bundle as structured notes to guide classroom instruction, while students can rely on the visuals and explanations for independent revision and exam preparation. Topics Included C1.2 Cell Respiration C1.3 Photosynthesis C2.1 Chemical Signalling C2.2 Neural Signalling C3.1 Integration of Systems C3.2 Defence Against Disease C4.1 Populations & Communities D1.1 DNA Replication D1.2 Protein Synthesis D1.3 Mutation & Gene Editing D2.1 Cell Division D2.2 Cell & Nuclear Division D3.1 Homeostasis D4.1 Natural Selection D4.2 Stability & Change D4.3 Climate Change Includes all remaining DP topics from C1.2 to D4.3 not covered in Part 1. This bundle includes over 700 cards of curriculum-aligned material featuring diagrams, molecular models, data visuals, laboratory investigations, and concise explanations that link biological theory to real-world processes. Higher Level content is clearly identified and integrated throughout. This is a comprehensive yet balanced teaching and revision package, suitable for guiding instruction across the second half of the IB Biology course and supporting confident student revision.