Scientists studied the death rate from lung cancer in a group of adults.
Table
| Number of cigarettes smoked per day | Deaths from lung cancer per 100 000 people per year |
|---|---|
| 0 | 10 |
| 1 to 14 | 78 |
| 15 to 24 | 127 |
| 25 or more | 251 |
Which conclusion is supported by the data?
Smoking is the only cause of lung cancer in this group of adults.
The death rate from lung cancer increases as more cigarettes are smoked.
Every adult who smokes 25 or more cigarettes a day dies of lung cancer.
Stopping smoking lowers the death rate from lung cancer to zero.
181 exam-style questions on OCR GCSE Biology 6.3 Monitoring and maintaining health, covering 6.3.1 Health and disease, 6.3.2 Interactions between diseases, 6.3.3 Spread of communicable diseases, 6.3.4 Common infections and diseases, 6.3.5 Physical plant defence responses, 6.3.6 Chemical plant defence responses, 6.3.7 Detecting and identifying plant diseases, 6.3.8 White blood cells and platelets, 6.3.9 Non-specific defence systems, 6.3.10 The immune system, 6.3.11 Monoclonal antibodies, 6.3.12 Vaccines and medicines, 6.3.13 Aseptic techniques, 6.3.14 Discovery and development of new medicines, 6.3.15 Causes of non-communicable diseases, 6.3.16 Treatments for cardiovascular disease, 6.3.17 Lifestyle factors and non-communicable diseases, 6.3.18 Cancer, 6.3.19 Stem cells in medicine, 6.3.20 Gene technology in medicine, and 6.3.21 The human genome and medicine. Each one has a worked solution and a mark scheme showing where the marks go.