A research team is developing drug K. The drug is intended to reduce the production of a chemical that causes the symptoms of a skin condition.
Drug K was added to cultures of cells and to samples of tissue. The table shows the results after 24 hours.
| Concentration of drug K in mg per dm³ | Reduction in production of the chemical in cell cultures in % | Cells damaged in tissue samples in % |
|---|---|---|
| 0 | 0 | 2 |
| 2 | 35 | 2 |
| 4 | 68 | 5 |
| 8 | 89 | 36 |
A scientist concluded that drug K should now be tested on healthy volunteers.
Evaluate the scientist's conclusion.
252 exam-style questions on AQA GCSE Biology 3.1 Communicable diseases, covering 3.1.1 Communicable (infectious) diseases, 3.1.2 Viral diseases, 3.1.3 Bacterial diseases, 3.1.4 Fungal diseases, 3.1.5 Protist diseases, 3.1.6 Human defence systems, 3.1.7 Vaccination, 3.1.8 Antibiotics and painkillers, and 3.1.9 Discovery and development of drugs. Each one has a worked solution and a mark scheme showing where the marks go.