1.1: Classification of Microorganisms
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| microorganism ! |
1.2: Factors that Affect the Growth of Microorganisms
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| click for enlargement 1.3: Useful Microorganisms Digestion of Food > The useful bacteria in human intestine make vitamins such as vitamin K and vitamin B. Decomposition and Recycling of Materials > Saprophytic bacteria and fungi release enzymes that help to break down complex organic matter in dead organisms into simpler substances by decomposition. Medicines and Health Supplements > Antibiotics, e.g. penicillin (an antibiotic) which is widely used to kill bacteria that cause various diseases. > Vaccine consists of dead/weakened harmful microorganisms that is injected/swallowed into human body in turn produce antibodies to fight the disease caused by the harmful microorganisms. Agriculture > In making composts. > Biological control Industries > Making bread > Brewing alcoholic drinks > Making animal skins 1.4: The Harmful Effects of Microorganisms |
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1.5: Ways to prevent Infections Caused by Microorganisms
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1.6: How Diseases Caused by Pathogens are Treated
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