A newly discovered mineral emits ionising radiation.
Scientists exposed identical samples of human cells to the radiation. Each sample contained 10 000 cells.
| Exposure time in minutes | Number of cells with DNA mutations |
|---|---|
| 0 | 3 |
| 10 | 11 |
| 20 | 24 |
| 40 | 47 |
A scientist concluded that the radiation from the mineral is a carcinogen.
Evaluate the scientist's conclusion.
Use the data in your answer.
304 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.