Study guide Exam 1 incomplete

Study guide Exam 1 incomplete - Study Guide for Exam 1 DO...

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Study Guide for Exam 1 DO NOT USE THIS AS AN ALL INCLUSIVE STUDY GUIDE 1) Describe in detail at least 3 ways in which microorganisms have a direct and substantial impact on your life (other than as causative agents of disease). Include a discussion of the role(s) of the microorganisms in these processes. 2) What are the essential characteristics of life? 3) Discuss the doctrine of spontaneous generation. Present the evidence that was used to support it and present the evidence that was used to discredit it. Name three investigators who opposed the doctrine. How was this theory finally discredited? - The Spontaneous Generation is the theory that living things can be created from non living things. - Examples include : Maggots from Rotting Meat o Mice from Corn Grain o Flies from Manure - 4) Why is gelatin not used as a solidifying agent in media? - Because gelatin does not remain solid at optimum temperatures (37 degrees C) , which is the ideal growth of human pathogens 5) List Koch’s postulates. - The organism should be constantly present in animals suffering from the disease and should not be present in healthy animals. - The microorganisms are isolated from the tissues of a dead animal and a pure culture is developed - Microorganisms from the pure culture are inculcated into a healthy animal - The microorganisms are reisolated from these experimental animals, cultured and should be identical to the original pathogen 1
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