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Hypothesize how over-washing of hands can affect the population of “good” bacteria that resides on human skin.
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- Write a short essay about how putting salt on meat preserves it from spoilage by bacteria.Which process is occurring in these bacteria? A. transduction B. transformation C. conjugation D. reproductionHypothesize as to why iron can have an impact on bacterial growth, particularly S. Typhimurium, S.epidermis S.aureus , E. coli and Y. enterocolitica
- Write an essay on microbial growth and using bacterium as an example to determine the rate of population.The term "Superbug" refers to? A. Certain bacteria strain that can grow in all kinds of unfavorable conditiions B. Certain bacteria strain is more toxic than all the viruses C. Certain bacteria strain that is resistant to all available antibiotics D. Certain bacteria strain that grows faster than any other strainsDNA is directly passed from one live microbial cell to another in the process of ? A. Conjugation B. Transformation C. Transduction D. Transmutation
- Bacteria perform a number of ecological roles. Which role typically involves symbiosis? A. skin commensalist B. decomposition C. chemical recycling D. Immobilizing nutrientsWhich term best describes an antibiotic that kills only gram-positive bacteria? A. Narrow Spectum B. Selectively Toxic C. Semi-Active D. WorthlessWhat can be found on a sterile surface? A. Protozoan B. Viruses C. Nothing D. Bacteria
- Which is NOT true of the Tuskegee Syphilis Study? a. Participants never saw doctors or nurses b. Participants were given the newly discovered penicillin c. The study was an important reason the U.S. developed ethical standards for experiments d. Poor black men were chosen as participantsYou observe mold growing on one side of a slice of bread, but not on the other side. Form a hypothesis to explain this difference in mold growthA doctor is researching new ways to treat biofilms on artificial joints. Which approach would best help prevent bacterial colonization of the medical implants? a. Increase antibiotic dosing b. Create implants with rougher surfaces c. Vaccinate patients against all pathogenic bacteria d. Inhibit quorum sensing