Defending against infection

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1. What can vaccination involve?

  • Injecting a dead form of the disease to stimulate immunity
  • Injecting an inactive form of the pathogen to stimulate immunity
  • Injecting an inactive form of the disease to stimulate immunity
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2. How do antibiotics work?

  • They can stop bacteria from reproducing
  • They can stop viruses from reproducing
  • They can stop toxins poisoning the tissues of the host

3. Which of these is one of the main problems with bacteria?

  • They cause measles and mumps in young children
  • They produce toxins
  • They are killed by antibiotics

4. What is a 'pathogen'?

  • A disease-causing microorganism
  • A disease
  • A type of disease

5. It is important to use antibiotics carefully because:

  • it reduces the spread of resistant strains
  • it reduces the spread of resistant strains
  • antibiotics are very expensive

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