Combined Science (B) J260,05 Higher June 2022, OCR GCSE Past Papers with Mark Schemes

This biology exam focuses on topics like transpiration rates, nitrate absorption, genetic engineering, and cardiovascular health. It includes data analysis, genetic studies (e.g., cordgrass chromosomes), and practical applications like the impact of statins on CVD. Cellular respiration and ATP usage are explored alongside experimental setups and evolutionary evidence, such as lactase persistence. Questions on homeostasis, enzyme activity, and hormone regulation (thyroxine) integrate theoretical and practical knowledge. The exam tests critical thinking, data interpretation, and scientific communication, linking core biological principles to human health and environmental sustainability.