n some hospitals, short wavelength irradiation of patients room is a way to kill pathogens and endospores contaminating surfaces. True or false?
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- Why does UV light have to be directly exposed and waved around an object that needs to be disinfected and not waved around a bag with the items that need to be disinfected inside of it?what is the purpose of using oil immersion with the 100x objective lens? a)To prevent refraction of light b)To prevent scratching the slide c)To allow microbes to resuspend in the fluid d)Oil is not used with the 100x, but rather 40x e)To prevent microbes from dryingTrue or false? it is possible to kill or remove all microorganisims by hand washing or using hand sanitizer ?
- Is is best to observe slides of bacteria stained with the acid fast stain under high dry magnification. True or falseThe acid fast bacterium, Mycobacterium smegmatis, is relatively safe for students to work with because of its thin cell wall. If a gram stain is to be performed on this particular microbe, it often takes the gram stain reaction. Why?Which of the following serves as a counterstain for the gram-stain technique? It also happens to be the counterstain for the endospore staining technique.
- Why is it essential that smears be air-dried? Why can’t they be gently heated over a flame to speed up the drying process?Name a few group of microorganisms where Grams staining will not work and/or not appropriate to use. Why?Which one of the following is the most resistant microorganism for sterilization: Select one: a. Lipid enveloped viruses b. Gram negative bacteria c. Gram positive bacteria d. Mycobacterium
- how is UV radiation a good type of control mechanism against microbial growth?please expalin what happens to the microbe and affects this control cause.If you were a quality control agent using UV sterilization in an operating theater, how would you test it's effectiveness in infection control?The decolorizing agent damages the peptidoglycan layer. Why is this important to consider when deciding how long to decolorize a specimen as part of the Gram stain procedure?