Written specifically for IBDP Biology HL students, this Guide covers every aspect of the core syllabus. Coverage includes: a review of all core topics, following a developmental sequence to emphasise thematic links; guidance on tackling short answer and extended response questions; and advice on interpreting command terms and maximising marks. Key features: questions to reinforce learning; self-test multiple choice quizzes, with answers; many easy-to-learn and reproduce diagrams; and key vocabulary, facts, and principles highlighted throughout