HKDSE Biology Past Papers

The 2025 HKDSE Biology Paper 1B showcases a strong emphasis on evolutionary ecology, practical scientific inquiry, and clinical-environmental applications. Notable features include multi-part questions on lactase persistence genetics, seed germination hormone actions, and the classic Mulberry Dike-Fish Pond system.

The 2024 HKDSE Biology paper is characterized by a strong emphasis on experimental design, data interpretation, and high-order logic, featuring novel scientific contexts such as AI-generated fieldwork criticism, gut microbiota research, and PCR primer design.

The 2023 HKDSE Biology exam presents a well-balanced paperset featuring classic experimental designs, ecological case studies, and application-oriented human physiology. Traditional topics such as photosynthesis, pedigree genetics, and anaerobic respiration in mitochondria are thoroughly assessed, requiring candidates to integrate conceptual knowledge with rigorous mathematical and graphical data analysis.

The 2022 HKDSE Biology exam presents a balanced challenge with a strong emphasis on experimental logic, cross-topic integration, and real-world scenarios. Notably, scientific inquiry design (the orchid speciation study) and calculation precision (microscope actual-size estimation) separated level 5** candidates from the rest.

The 2021 HKDSE Biology exam features a balanced paper that tests candidates' core conceptual understanding, data analysis skills, and experimental design. While standard physiology questions remain highly accessible, cross-topic integration and graph-drawing exercises proved to be significant differentiators.