Chapter 1. Microorganisms and Microbiology Introductory to microbiology History of microbiology

Chapter 1. Microorganisms and Microbiology

Introductory to microbiology

History of microbiology



MicrobiologyMicroorganisms as cellsThe natural environment of microorganismsMicroorganism and humans



Microbiology: studies of microorganisms and their impact on our life.



Microbiology: studies of microorganisms and their impact on our life.

Purple bacteria cyanobacteria



MicrobiologyMicroorganisms as individual cells

Consume foodReproduce DifferentiateCommunicateMove Evolve



MicrobiologyMicroorganisms as cellsThe natural environment of microorganisms

microbial communities, ecosystem

Fig. 1.5b. A bacterial community in a sewage sludge. The sample was stained with a series of dyes.




Disease

Fig. 1.7 Death rate for the 10 leading causes of death in the United States

Fig. 1.7 Death rate for the 10 leading causes of death in the United States




Disease Food AgricultureEnergy and environmentBiotechnology





The 300 year history of microbiology

Antoni van Leeuwenhoek

Fig. 1.9 The replica of Leeuwenhoek’s microscope and red blood cells





The 300 year history of microbiology

Antoni van Leeuwenhoek

Louis Pasteur

Fig. 1.11 Pasteur’s experiment with the swan-necked flask







The 300 year history of microbiologyAntoni van LeeuwenhoekLouis PasteurFerdinand Cohn




History of microbiologyThe 300 year history of microbiology

Antoni van LeeuwenhoekLouis PasteurFerdinand CohnRobert Koch

Koch’s postulates

1. The organism should be present in all cases of the disease and absent from healthy animals.

2. The suspect organism should be grown in pure culture.

3. Cells from the pure culture should cause the disease in a healthy animal.

4. The organism should be reisolated and shown to be the same as the original.





Antoni van LeeuwenhoekLouis PasteurFerdinand CohnRobert KochRichard Petri





Antoni van LeeuwenhoekLouis PasteurFerdinand CohnRobert KochRichard PetriEdward Delong End

Documents

Chapter 1. Microorganisms and Microbiology Introductory to microbiology History of microbiology