AQA Biology B1.1: Keeping Healthy

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1. Vaccines contain pathogens. True or false?

  • True: But only dead or inactive forms of them; in this way, immunity can develop at little or no risk to the patient
  • False: This would be an entirely unnecessary risk; immunity is developed more effectively without the presence of pathogens to elicit illness
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2. Antibiotics are drugs which kill pathogens, or infective bacteria. True or false?

  • True: Antibiotics destroy the pathogens, thereby killing them. They are 'anti-bio', 'against-life'
  • False: Antibiotics merely reduce the pathogen to an ineffective and harmless state. For efficiency, these ineffective pathogens can then be removed for use in vaccines, for immunisation

3. A seemingly random alteration in the composition of genetic material during its mitotic replication in asexual reproduction is referred to as a...

  • Variation
  • Mutation
  • Modification
  • Skeuomorph

4. Which of the following factors does not affect metabolic rate?

  • Inherited factors
  • Physical activity
  • Size of the organism
  • Proportion of muscle to fat

5. Which of the following is an apparatus usually used in the development of controlled bacteria cultures?

  • Vaccinating loop
  • Inoculating loop
  • Immunising loop
  • Sterilising loop

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