CAIE A Level Biology 9700 · Infectious diseases
A hospital is treating an increasing number of patients infected with methicillin-resistant Staphylococcus aureus (MRSA), a bacterium resistant to many common antibiotics. Explain the consequences of antibiotic resistance and the steps that can be taken to reduce its impact, including why antibiotics are ineffective against viruses.
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.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.