| Unit III: PESTS AND PARASITES/SANITATION |
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Specific Objectives
Students should be able to: |
Explanatory notes
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Suggested Practical Activities
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1. Describe the conditions which promote the growth of micro-organisms;
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Procedures for retarding and preventing the growth of bread mould
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2. Discuss conditions that encourage the breeding of household pests;
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Cockroaches, flies, rats, mosquitoes.
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3. Discuss the principles of food preservation;
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Toxins, salting, drying, pickling, heating, refrigeration, adding sugar and treating with other preservatives;
the effects of microorganisms on food.
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4. Discuss the different types of waste;
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Domestic, industrial and biological waste. |
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5. Discuss the need for personal and community hygiene
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The importance of the state disposal of waste, adequate toilet and sewage disposal facilities, garbage collection and disposal.
Uses to which waste can be put for example, recycling, biogas production;
environmental effects such as pollution of potable water, food contamination, increase in pest population; prediction of their consequences;
assessment of the effects of unsanitary conditions on the spread of pathogenic microorganisms.
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| 6. * discuss the role of antigens and antibodies in natural and artificial control of diseases |
Vaccines; an awareness of AIDS as a disease which results from damage to the immune system. |
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| Go to Section B: Unit IV: SAFETY HAZARDS |
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