Biology (A) J247,04 Higher June 2019, OCR GCSE Past Papers with Mark Schemes

The OCR GCSE Biology Paper 4 (June 2019) addresses ecosystem interactions, genetic engineering, and human health. Topics include the carbon cycle, Mendelian genetics, risk factors for diseases, and antibiotic resistance. Practical investigations focus on food webs, fungal infections, and plant sampling in salt marshes. Key concepts encompass trophic levels, conservation, Darwin′s theory of natural selection, and the impacts of climate change. Ethical considerations and experimental techniques in biotechnology, such as cloning, monoclonal antibodies, and gene editing, are also highlighted, alongside data interpretation and risk assessments.