Health Science Paper 1, Nov/Dec. 2010  
Questions: 1 2 3 4 5 6 Main 7 8
General Comments
Question 5

Question 5

(a) What is an air-borne disease? [2 marks]
(b) List four disease - causing organisms[4 marks]
(c) State four ways by which diseases are generally[4 marks]




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    This question was attempted by many candidates and their performance was fair. In part (a)
    candidate correctly define an air-borne disease. In part (b) candidates wrongly mentioned
    diseases such as cholera, tuberculosis, measles, typhoid fever as disease - causing organisms.
    In part (c) candidates could not correctly state ways by which diseases are generally controlled.
    The expected answers were as follows:
    5(a) Air-borne diseases
    A disease caused by organisms that are carried in the air
    through droplet infection/sneezing, coughing, talking and breathing/named
    (b) Causative agent of diseases
    - bacteria
    - fungi
    - viruses
    - protozoa
    - rickettsia
    (c) Ways by which diseases are generally controlled
    sterilization of equipment
    good personal hygiene/clean environment
    use of drugs.

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