The OCR GCSE Combined Science A J250/08 June 2023 Biology (Higher Tier) paper assesses concepts in genetics, biodiversity, ecology, and human health. Topics include genetic crosses, stem cells, biodiversity conservation, pollination, and antibiotic resistance. It emphasizes experimental methods, data interpretation, and practical applications in biology, such as habitat surveys and bacterial growth inhibition. Analytical skills and understanding of key biological processes are tested. Total marks: 60. Duration: 1 hour 10 minutes.