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Which of the following is/are true of selective toxicity? It takes advantage of structural differences between host and pathogen AND to be effective an antimicrobial agent must be more toxic to the patient than the pathogen. It takes advantage of structural differences between host and pathogen AND it takes advantage of metabolic differences between host and pathogen. It takes advantage of metabolic differences between host and pathogen. To be effective an antimicrobial agent must be more toxic to the patient than the pathogen. It takes advantage of structural differences between host and pathogen. Question 13 (Mandatory) (7.69 points) Which of the following would NOT be bacteriostatic? refrigeration of mesophiles autoclaving dessication freezing below 0°C It is inappropriate to prescribe antibacterial agents to treat colds or flu because these diseases can act synergistically with each other. these diseases are transmitted by spores, which are hard to kill. these diseases are caused by viruses. the microbes involved can develop resistance rapidly. Question 6 (Mandatory) (7.69 points) Physical agents for controlling microbial growth include all the following except pasteurization freezing UV Radiation antibiotics Question 7 (Mandatory) (7.69 points) Put the following in order, from most resistant to antimicrobial agents to least resistant to antimicrobial agents. 1. gram positive bacteria II. bacterial endospores III. enveloped viruses IV. nonenveloped (naked) viruses Vocabochardt Antimicrobial drugs that inhibit cell membranes work because all cells have cell membranes. This is an example of an antibiotic that has Low Selective toxicity High selective toxicity Question 3 (Mandatory) (7.7 points) Antimicrobial drugs that inhibit cell wall synthesis work because humans do not have a cell wall. This is an example of an antibiotic that has High selective toxicity Low Selective toxicity Question 4 (Mandatory) (7.69 points) During which growth phase are bacteria more susceptible to antimicrobial drugs? Log phase Lag phase Death phase Stationary phase Question 5 (Mandatory) (7.69 points) It is inappropriate to prescribe antibacterial agents to treat colds or flu because

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