CAIE A Level Biology 9700 · Infectious diseases
A patient with bacterial pneumonia is treated with penicillin, which is effective. However, the doctor explains that antibiotics do not work against viruses like those causing the common cold. Discuss how penicillin acts on bacteria and why antibiotics are ineffective against viruses. Also discuss the consequences of antibiotic resistance and steps that can be taken to reduce its impact.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Discuss means: Set out the points on more than one side and weigh them up. Cover both sides, then finish with a judgement that follows from what you wrote.
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