AQA Biology B1.1: Keeping Healthy

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

  • Modification
  • Variation
  • Mutation
  • Skeuomorph
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Other questions in this quiz

2. Which of the following is the name for the small poisonous substances emitted by pathogens?

  • Toxans
  • Toxins
  • Toxicons
  • Toxilla

3. 'Pathogen' is synonymous with (another word for) 'disease'. True or false?

  • False: Pathogens are microorganisms that cause disease, they are not the disease themselves
  • True: Pathogens are the microscopic embodiment of any given disease

4. Why can antibiotics not be used effectively to combat viruses?

  • Viruses replicate the body's own genetic material, and incorporate this into their own plasmids, and thus effectively become genetically identical to the body, and cannot be identified as harmful foreign bodies
  • Viruses reside and reproduce within the body's own cells, and thus cannot be easily identified as harmful foreign bodies and inhibited
  • Viruses do not have antigens (surface proteins), and thus their protein composition cannot be fragmented by antibiotics
  • Viruses are more proficiently adapted to infection than bacteria, and thus develop antibiotic resistance to quickly to make use viable

5. Which of the following is not a potential form of contamination for laboratory cultures of non-pathogenic bacteria?

  • Water
  • Laboratory equipment
  • Hair
  • Agar jelly
  • Skin
  • Air


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