CHAPTER 7 HUMAN HEALTH AND DISEASE
EXERCISES
1. What are the various public health measures, which you would suggest as safeguard against infectious diseases?
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2. In which way has the study of biology helped us to control infectious diseases?
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3. How does the transmission of each of the following diseases take place?
(a) Amoebiasis (b) Malaria (c) Ascariasis (d) Pneumonia
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4. What measure would you take to prevent water-borne diseases?
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5. Discuss with your teacher what does ‘a suitable gene’ means, in the context of DNA vaccines.
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6. Name the primary and secondary lymphoid organs.
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7. The following are some well-known abbreviations, which have been used in this chapter. Expand each one to its full form:
(a) MALT (b) CMI (c) AIDS (d) NACO
(e) HIV
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8. Differentiate the following and give examples of each:
(a) Innate and acquired immunity (b) Active and passive immunity
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9. Draw a well-labelled diagram of an antibody molecule.
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10. What are the various routes by which transmission of human immunodeficiency virus takes place?
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11. What is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person?
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