A scientist added the same number of human immune cells and the same amount of HIV to four culture dishes. A different concentration of an antiretroviral drug was added to each dish.
The scientist recorded the results after 5 days.
| Concentration of antiretroviral drug in mg/dm³ | Amount of HIV in relative units | Living immune cells as a percentage of the number at the start |
|---|---|---|
| 0.0 | 100 | 41 |
| 0.5 | 58 | 64 |
| 1.0 | 24 | 82 |
| 2.0 | 22 | 83 |
Using the data, explain how antiretroviral drugs can reduce the chance that a person infected with HIV develops AIDS.
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.