Antibiotics are used to treat some infections.
The Table shows the effects of three antibiotics, P, Q and R.
Table
| Antibiotic | Process stopped in bacterial cells | Process stopped in human cells |
|---|---|---|
| P | making cell walls | none |
| Q | protein synthesis | none |
| R | protein synthesis | protein synthesis |
Explain why antibiotics can be used to treat a bacterial infection without harming the person.
Use the Table to explain which antibiotic should not be used to treat a patient.
Influenza is caused by a virus.
Give the reason why antibiotics are not used to treat influenza.
45 exam-style questions on Edexcel GCSE Biology 5.3 Immune system and medicines, covering 5.3.1 The specific immune system, 5.3.2 Response to immunisation, 5.3.3 Advantages and disadvantages of immunisation, 5.3.4 Antibiotics and bacterial infections, 5.3.5 Aseptic techniques in culturing, 5.3.6 Cross-sectional areas of cultures, 5.3.7 Stages of developing new medicines, and 5.3.8 Production of monoclonal antibodies. Each one has a worked solution and a mark scheme showing where the marks go.