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Chapter 1 Practice Paper: Infectious Diseases in Humans — question paper

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QQ/S4CBI/CH1

Secondary 4 · Combined Science (Biology) (G2 / G3)

Chapter 1 Practice Paper

Infectious Diseases in Humans

Duration: 40 minutes
Total: 30 marks
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Class:
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Date:

READ THESE INSTRUCTIONS FIRST

  • Answer all questions.
  • Section A: choose the one correct answer for each multiple-choice question.
  • Section B: answer in the spaces provided; show all necessary working.
  • Give numerical answers to 3 significant figures where appropriate, with units.
  • Biological drawings are not required; describe or label structures in words where asked.
  • The use of a calculator is permitted.

Original practice material written for the MOE Combined Science (Biology) syllabus. It is not an official MOE or school examination paper. Chapter 1 (infectious vs non-infectious; pathogens and spread; influenza and pneumococcal disease; vaccines; antibiotics and resistance).

For Examiner’s Use
Section A/ 10
Section B/ 20
Total/ 30

Section A: Multiple-choice questions[10 marks]

Choose the one correct answer for each question.

  1. 1

    Which disease can be transmitted from person to person?

    1. Atype 2 diabetes
    2. Bpneumococcal pneumonia
    3. Ccoronary heart disease
    4. Dmyopia
    ( )
  2. 2

    Influenza is caused by a

    1. Abacterium
    2. Bvirus
    3. Cfungus
    4. Dtoxin
    ( )
  3. 3

    A vaccine protects by stimulating

    1. Ared blood cells to carry more oxygen
    2. Bplatelets to clot faster
    3. Cwhite blood cells to produce antibodies quickly
    4. Dthe liver to store glycogen
    ( )
  4. 4

    Antibiotics are prescribed for

    1. Ainfluenza
    2. Bthe common cold
    3. Cpneumococcal pneumonia
    4. Dall fevers
    ( )
  5. 5

    Stopping an antibiotic course early mainly risks

    1. Aselecting and multiplying resistant bacteria
    2. Bweakening the bones
    3. Ccuring the infection faster
    4. Dconverting bacteria into viruses
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided.

  1. 1

    Two students fall ill in the same week. Student P has influenza. Student Q is diagnosed with type 2 diabetes.

    1. (a)

      State which illness is infectious and name its pathogen group.

      [2]
    2. (b)

      List two symptoms expected in student P.

      [1]
    3. (c)

      Explain why student Q's illness is not infectious.

      [2]
    4. (d)

      State two measures the school could take to reduce the spread of student P)s illness.

      [2]
  2. 2

    A new vaccine against a bacterial disease is introduced.

    1. (a)

      State what the vaccine contains.

      [1]
    2. (b)

      Describe how the vaccine protects a vaccinated person.

      [3]
    3. (c)

      Explain why the vaccine itself does not cause the disease.

      [2]
  3. 3

    Antibiotic resistance is described as a growing global problem.

    1. (a)

      State why antibiotics have no effect on influenza.

      [2]
    2. (b)

      Explain how stopping an antibiotic course early can lead to a resistant infection.

      [3]
    3. (c)

      State two practices that slow the development of antibiotic resistance.

      [2]

— End of paper —