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Themes in MicrobiologySofronio AgustinProfessorLECTURES IN MICROBIOLOGYLESSON 1
Topics CoveredScope of MicrobiologyImportance of MicroorganismsCharacteristics of MicroorganismsHistory of MicrobiologyTaxonomy
Scope of MicrobiologyMicrobiologystudy of organisms too small to be seen by the naked eye.Microbes or Microorganismscommonly referred to as “germs” or “bugs”include bacteria, viruses, fungi, algae, protozoa and helminths. Prions (“infectious proteins”) are recent addition.
Branches of StudyBacteriologystudy of bacteriaMycology study of fungi and yeastVirology study of virusesParasitology study of parasitic protozoans and helminthsImmunology study of the humoral and cellular immune response to disease agents and allergens
Epidemiology and Public HealthMicrobiologydistribution and spread of diseases and their control and preventionFood Microbiologyuse of microbes in the production of food products and drinksAgricultural and Veterinary Microbiologyuse of microbes to increase crop and livestock yield and control of plant pests and animal diseasesEnvironmental Microbiologystudy of the beneficial and harmful effects of microbes on the environmentSpecializations in Microbiology
Importance of MicrobiologyFirst bacteriaPhotosynthesis and decompositionHuman use of microorganismsInfectious diseases
The ProgenoteEvolutionary Timeline: Bacteria appeared 3.5 billion years ago
Photosynthetic MicrobesMicrobes are involved in photosynthesis and accounts for >50% of earth’s oxygen. Also involved in decomposition and nutrient recycling.
Beneficial Uses of MicrobesExtraction of copper from ore
Beneficial Uses of MicrobesSynthesis of drugs, hormones and enzymes
Beneficial Uses of MicrobesBioremediation is the use of microbes to degrade organic matter in sewage and detoxify pollutants such as oil spills.
Modern Uses of MicrobesBiotechnology, the use of microbes as miniature biochemical factories to produce food and chemicals is centuries old.Genetic engineeringmakes use of molecular biology and recombinant DNA techniques as new tools for biotechnology.Gene therapyreplaces missing or defective genes in human cells through genetic engineering.