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Many people use antimicrobial soap to kill bacteria on their hands. However, overuse may increase the risk of infection. How could this occur?
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- How is UV radiation a good type of control mechanism against microbial growth? Explain what happens to the microbe and effects this control causes.During the fall 2001 bioterrorist attack in which anthrax endospores were sent through the mail, one news commentator suggested that people should iron all their incoming mail with a regular household iron as a means of destroying endospores. Would you agree that this is a good way to disinfect mail? Explain your answer. Which disinfectant methods would be both more effective and more practical?When the microbes were exposed to different temperatures how was it possible to see minimal growth? What had to be functional in order for growth to occur?
- Drying is an effective antimicrobial strategy because:(a) It oxidizes cellular macromolecules(b) It limits the amount of water available to microbes(c) It increases susceptibility to UV irradiation(d) It triggers the thermal death pointWhen applying a disinfectant to kill microbes, our bead experiment showed that what two factors affect how effectively microbes will be killed?Refrigerated milk can spoil due to microbial growth. Do these microbes typically cause disease in humans? Consider the environment in your body and the environment in which the microbes are growing.
- Plague has been successfully controlled by the use of streptomycin and tetracycline Why was this disease so lethal in the years 600when antimicrobial drugs were not available?What happens to good bacteria on your body when you wash or use anti-bacterial agents?Explain why, when using an antiseptic, killing all thebacteria may not be the desired result.