Scientists tested a possible antiviral drug using samples of human tissue. Separate samples of uninfected body cells were used to measure damage caused by the drug.
| Drug concentration in µg/cm³ | Amount of virus after 24 hours (% of result with no drug) | Uninfected body cells alive after 24 hours (%) |
|---|---|---|
| 0 | 100 | 100 |
| 1 | 70 | 98 |
| 2 | 38 | 90 |
| 4 | 12 | 64 |
| 8 | 3 | 18 |
Explain why the results support the conclusion that it is difficult to develop drugs that kill viruses without damaging the body's tissues. Use data from the table.
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.