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ZIMSEC O-Level Combined Science

7.1.7.2Bilharzia, malaria, cholera, typhoid and immunity

Bilharzia, malaria, cholera, typhoid and immunity in ZIMSEC O-Level Combined Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic119 practice questions6 lessons

Overview

Forms 2 to 4.

Learning objectives

What the syllabus expects you to be able to do.

  1. 7.1.7.2.1State causes of diseases and describe the life cycle of the bilharzia parasite and how its spread is prevented.
  2. 7.1.7.2.2Describe the causes, signs, symptoms and treatment of malaria, typhoid, Ebola and cholera.
  3. 7.1.7.2.3Describe the life cycle of the malaria parasite and methods of controlling malaria.
  4. 7.1.7.2.4Explain immunity, describe its types and explain how infants acquire it.

Lessons

  • Bilharzia (schistosomiasis)

    18 min

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  • Cholera

    19 min

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  • Ebola virus disease, and comparing four diseases

    20 min

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  • Immunity and vaccination

    24 min

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  • Malaria

    20 min

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  • Tuberculosis and typhoid

    21 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Bilharzia, malaria, cholera, typhoid and immunity: sample question

1 mark

Name the animal in which bilharzia larvae multiply before they are released into the water.

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