Microbial resistance resulting from mutation occurs because A. prokaryotic genom

Question

Microbial resistance resulting from mutation occurs because A. prokaryotic genomes undergo mutation rapidly. B. prokaryotic genomes undergo mutation often. C. short generation times accumulate mutations in populations. D. mutations are passed between organisms. E. All of the choices are correct Alexander Fleming had been running tests using Staphylococcus, and left some plates out to incubate. Evidently, after returning to his lab after the weekend, he found that Penicillium mold was growing on his agar plates containing the growth of Staphylococcus, Looking more closely, he found a large, clear area around the mold colony where Staphylococcus colonies did not crow. Given this situation, a valid hypothesis would be that: A The Staphylococcus was being inhibited by the Penicillium mold. B The Penicillium mold was being killed by the Staphylococcus. C bacteriological medium being used in the plates was somehow inhibitory to the Staphylococcus growth. D. The room temperature incubation was inhibitory to the growth of Staphylococcus. Broad-spectrum drugs that disrupt the bodys normal biota often cause A. nephrotoxicity. B. superinfections. C. allergic reactions. D. drug toxicity. Drug susceptibility testing determines A. the patient's response to various antimicrobials. B. the pathogen's response to various antimicrobials. C. if normal biota Mill be affected by antimicrobials. D. if the drug is increasing to toxic levels in a patient. A clinical microbiologist makes serial dilutions of several antimicrobials in broth, and then incubates each drug dilution series with a standard amount of a patients isolated pathogen. What is this microbiologist setting up? A. Kirby-Bauer technique B. antiprogram C. E-fest D. minimum inhibitory concentration (MIC) test E. therapeutic index (Tl)

Explanation / Answer

45) Microbial resistance resulting from mutation in prokaryotes occurs because the prokaryotic genomes are more susceptible to mutation and they undergo mutation rapidly and very often. The generation time in prokaryotes is very small and this results in accumulaation of mutation in populations. The microbial resistance is transmitted between bacteria with the help of plasmid by a process called as conjugation. So, the answer for this question is option (E) all of the choices are correct.

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