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Wyatt's Notes — Qualifications

AP Biology

AP Biology

Comprehensive revision notes for AP Biology, aligned with the College Board Course and Exam Description.

These notes cover the full AP Biology curriculum, from the molecular level through to ecosystems and evolution. Each topic page includes key definitions, detailed explanations, and worked examples to help you prepare for both the multiple-choice and free-response sections of the AP exam. The content is structured around the College Board’s four Big Ideas to help you build connections between topics.

Topics

Topics Covered

  • Chemistry of Life — water properties, macromolecules (carbohydrates, lipids, proteins, nucleic acids), enzyme structure and function
  • Cell Structure and Function — prokaryotic vs eukaryotic cells, organelles, cell membrane transport, cell communication
  • Cellular Energetics — photosynthesis, cellular respiration, ATP, coupled reactions, energy flow
  • Heredity — meiosis, Mendelian genetics, non-Mendelian inheritance, chromosomal inheritance, genetic engineering
  • Natural Selection — evidence for evolution, Hardy-Weinberg equilibrium, phylogeny, speciation, adaptive radiation

How to Use These Notes

  • Start with the topics you find most challenging and work through the notes systematically
  • Try to explain each concept back in your own words after reading a section
  • Use the topic links above to jump between related concepts when revising
  • Combine these notes with past paper practice for the best results

Study Tips

  • Focus on the four Big Ideas (evolution, energetics, information transfer, systems interactions) — free-response questions are organised around them
  • Practise explaining biological mechanisms in writing; the AP exam rewards clear, sequential descriptions of processes
  • Use diagrams to reinforce concepts such as cell signalling pathways, trophic pyramids, and feedback loops
  • Work through past free-response questions under timed conditions and compare your answers against the scoring guidelines
  • Review the required investigations and be prepared to describe experimental design, variables, and data analysis techniques
  • Build a personal glossary of key terms with precise definitions; many multiple-choice questions test subtle distinctions between related concepts
  • Form study groups to discuss and teach concepts — teaching others is one of the most effective ways to solidify understanding
  • Keep a mistake log of questions you get wrong in practice and review it before the exam to avoid repeating the same errors
  • Review the AP Biology science practices (modelling, data analysis, argumentation) alongside content — they are assessed throughout the exam

Summary

The key principles covered in this topic are linked in the sub-pages above. Focus on understanding the definitions, applying the formulas or frameworks, and evaluating strengths and limitations of each approach.

Worked Examples

Worked examples demonstrating the application of key concepts are covered in the detailed sub-pages linked above.

Common Pitfalls

  • Confusing terminology or concepts that appear similar but have distinct meanings.
  • Overlooking key assumptions or boundary conditions that limit applicability.