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Bacteria as pathogens: Edexcel A‑Level Biology B questions

Every Edexcel A-Level Biology B exam question on 6.2 Bacteria as pathogens, 2016–2025, with its mark scheme and examiner’s report.

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1,826 questions

  1. Q5(a)

    June 2024 · Paper 1

    1 mark6.2 Bacteria as pathogens
    The whole paper ↗
    June 2024 Paper 1, question 5(a): In one year, 245 000 people were diagnosed with septicaemia and 49 735 of these people died as a result. Which percentage of people survived septicaemia in this

  2. Q5(b)(ii)

    June 2024 · Paper 1

    1 mark6.2 Bacteria as pathogens
    The whole paper ↗
    June 2024 Paper 1, question 5(b)(ii): Both E. coli and S. aureus produce toxins. E. coli produces the same type of toxin as Salmonella bacteria. Which of the following statements about the toxins pr

  3. Q1(a)(i)

    June 2022 · Paper 1

    1 mark6.2 Bacteria as pathogens
    The whole paper ↗
    June 2022 Paper 1, question 1(a)(i): Name one type of Gram negative bacteria that releases endotoxins. (1)

  4. Q1(b)(i)

    June 2022 · Paper 1

    1 mark6.2 Bacteria as pathogens
    The whole paper ↗
    June 2022 Paper 1, question 1(b)(i): The LD50 value is the mass of the chemical per kg of body mass that would kill half the number of rodent animals. The LD50 value can be used to indicate how tox

  5. Q1(b)(ii)

    June 2022 · Paper 1

    2 marks6.2 Bacteria as pathogens
    The whole paper ↗
    June 2022 Paper 1, question 1(b)(ii): State two differences, other than toxicity, between endotoxins and exotoxins. (2)

  6. Q8(a)

    June 2018 · Paper 1

    1 mark6.2 Bacteria as pathogens2.1 Eukaryotic and prokaryotic cell structure and function
    The whole paper ↗
    June 2018 Paper 1, question 8(a): Which is the correct statement about Salmonella? (1) A Salmonella has a thick peptidoglycan cell wall and produces endotoxins B Salmonella has a thick peptidogl

  7. Q3(a)(i)

    June 2017 · Paper 1

    3 marks6.2 Bacteria as pathogens
    The whole paper ↗
    June 2017 Paper 1, question 3(a)(i): Explain why it is likely that this food poisoning resulted from food contaminated with Staphylococcus rather than with Salmonella. (3)
All 7 questions on Bacteria as pathogens, as a list
  1. June 2024, Paper 1, Q5(a) (1 mark): In one year, 245 000 people were diagnosed with septicaemia and 49 735 of these people died as a result. Which percentage of people survived septicaemia in this
  2. June 2024, Paper 1, Q5(b)(ii) (1 mark): Both E. coli and S. aureus produce toxins. E. coli produces the same type of toxin as Salmonella bacteria. Which of the following statements about the toxins pr
  3. June 2022, Paper 1, Q1(a)(i) (1 mark): Name one type of Gram negative bacteria that releases endotoxins. (1)
  4. June 2022, Paper 1, Q1(b)(i) (1 mark): The LD50 value is the mass of the chemical per kg of body mass that would kill half the number of rodent animals. The LD50 value can be used to indicate how tox
  5. June 2022, Paper 1, Q1(b)(ii) (2 marks): State two differences, other than toxicity, between endotoxins and exotoxins. (2)
  6. June 2018, Paper 1, Q8(a) (1 mark): Which is the correct statement about Salmonella? (1) A Salmonella has a thick peptidoglycan cell wall and produces endotoxins B Salmonella has a thick peptidogl
  7. June 2017, Paper 1, Q3(a)(i) (3 marks): Explain why it is likely that this food poisoning resulted from food contaminated with Staphylococcus rather than with Salmonella. (3)

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