| Front | Why do scientists struggle to study the brain? (2) |
| Back | The brain is very delicate so easily damaged.The different sections of the brain do not work in isolation. |
| Front | How do bacteria become antibiotic resistant? (4) |
| Back | 1) Mutations of bacterial pathogens produce new strains.2) Some strains might be resistant to antibiotics, and so are not killed.3) They survive and reproduce, so the population of the resistant strain rises.4) The resistant strain will then spread because people are not immune to it and there is no effective treatment. |
| Front | What is heart bypass surgery? (1) |
| Back | A surgery where blocked coronary arteries are replaced with sections of veins taken from other parts of the body. |