Combined Science (B) J260,05 Higher November 2020, OCR GCSE Past Papers with Mark Schemes

This biology exam explores key topics such as photosynthesis, DNA structure, and genetic inheritance. It includes practical investigations on carbon dioxide′s role in photosynthesis and experiments with microscopes to observe cellular structures. Concepts of natural selection, communicable diseases, and the ethical implications of genetic testing are highlighted. It also examines evolutionary models, the role of stem cells, and the impact of selective breeding on livestock. The paper emphasizes critical thinking through data interpretation, hypothesis testing, and comparative analysis, linking theoretical knowledge to real-world biological phenomena and scientific advancements.