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Why do we use Koch's postulates instead of Bassi's or Pasteur's postulates?

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Your answer for each question should be a minimum of 150 words (half page). Cite your sources after each question.;1. In 1835, Bassi showed that a fungus caused a silkworm disease, and in 1865 Pasteur discovered that a protozoan caused another silkworm disease. Why do we use Koch's postulates instead of Bassi's or Pasteur's postulates?;2. In 1884, Hans Christian Gram described a method of staining bacterial cells while not staining surrounding animal tissues, however, he thought the staining method he developed was faulty because not all bacteria stained. In a letter to the editor of the journal in which Gram published his findings, write your response to Gram's concern.;3. Compare and contrast gram-positive and gram-negative cell walls with regard to (a) sensitivity to antimicrobial agents, (b) resistance to phagocytosis, (c) chemical composition, and (d) decolorization by alcohol.;4. Identify the catabolic pathways used by the following bacteria;Pseudomonas Oxidizes glucose;Lactobacillus Ferments glucose;Alcaligenes Neither oxidizes nor ferments glucose;Escherichia Oxidizes and ferments glucose;5. You look in the refrigerator and find an orange drink you had forgotten was there. The drink now has an off-taste and it bubbles. What is the most likely explanation for the changes in the drink?;6. Rhodopseudomonas is an anaerobic photoautotroph that uses organic compounds as an electron donor. It is also capable of chemoheterotrophic metabolism. Diagram the metabolic pathways of this bacterium.;7. Assume that you are responsible for decontaminating materials in a large hospital. How would you sterilize each of the following? Briefly justify your answers.;a. A mattress used by a patient with bubonic plague;b. Intravenous glucose-saline solutions;c. Used disposable syringe;d. Tissues taken from patients;Attachment Preview;7_microbiology_questions.docx Download Attachment;Your answer for each question should be a minimum of 150 words (half page). Cite your sources;after each... Show more

 

Paper#15450 | Written in 18-Jul-2015

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