Antibiotics, resistance and infection control Quiz
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5 questions, one answer each
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1. Which statement about a bacteriostatic antibiotic is correct?
- A. It kills bacteria directly
- B. It prevents bacteria reproducing
- C. It destroys the cell membrane only
- D. It works only on viruses
2. Why do influenza viruses cause repeated infections in the same person?
- A. Antibodies are destroyed by the virus
- B. Memory cells are not made
- C. Mutation changes the surface antigens so memory cells no longer recognise them
- D. The virus hides in the nucleus of memory cells
3. A zone of inhibition has a diameter of 12 mm. What is its area to 2 significant figures?
- A. 110 mm²
- B. 38 mm²
- C. 75 mm²
- D. 450 mm²
4. Which action reduces the selection pressure for antibiotic resistance?
- A. Using broad-spectrum antibiotics for all infections
- B. Stopping a course as soon as symptoms improve
- C. Treating viral infections with antibiotics
- D. Prescribing antibiotics only when needed
5. Which pair of measures best prevents cross-infection of MRSA between patients?
- A. Hand washing and isolating infected patients
- B. Longer visiting hours and fewer cleaners
- C. Using one antibiotic for all patients
- D. Incubating samples at 37 °C