1. Genetics and DNA Structure | DNA base pairing, complementary strand formation, shape of DNA as a double helix, and methods for DNA extraction from biological samples. 2. Sexually Transmitted Infections and Health | Prevalence of STIs in the UK, calculation of infection rates, reasons for classifying chlamydia as a communicable disease, and prevention methods for transmission. 3. Antibiotic Resistance and Disease Control | Evolution of antibiotic resistance in Klebsiella pneumoniae, contribution of antibiotic overuse to resistance, characteristics of prokaryotic cells, and stages of antibiotic development. 4. Enzyme Activity and pH Effects | Lipase activity in milk, investigation of pH changes due to enzyme reactions, factors affecting enzyme function, and denaturation of enzymes when heated. 5. Cell Division and Cancer | Preparation of root tip slides to observe mitosis, calculation of mitotic index, impact of cancer on cell division rates, and the significance of uncontrolled mitosis. 6. Genetic Engineering and Biotechnology | Production of human insulin using genetically modified bacteria, use of genetically engineered pigs for organ transplants, and ethical considerations in genetic modification research.