📘 International Baccalaureate® (IB) Diploma Programme Biology (HL / SL) Specification
The IB DP Biology Paper 1 examination is an objective assessment testing core principles across Cell Biology, Molecular Biology, Genetics, Ecology, Evolution, and Human Physiology for Standard Level (SL) and Higher Level (HL) candidates. No calculators are permitted during Paper 1.
🔬 Topic 1 & 2: Cell & Molecular Biology
Cell theory, fluid mosaic membranes, endosymbiosis, enzyme kinetics, DNA structure, transcription, translation, and respiration.
🧬 Topic 3 & 10: Genetics & Inheritance
Meiosis, monohybrid/dihybrid crosses, sex linkage, gene pools, polygenic inheritance, and PCR biotechnology.
🌍 Topic 4 & 5: Ecology & Evolution
Energy flow (10% law), carbon cycle, greenhouse effect, natural selection, cladistics, and speciation mechanisms.
🫀 Topic 6 & 11: Human & Animal Physiology
Circulation, gas exchange, neurons & action potentials, endocrine homeostasis, osmoregulation, and muscle contraction.