Microbiology Exam 2 (2023)

Microbiology Exam 2 (2023) Sterilization - Answer-The process that completely destroys all microbial life, including spores. disinfection - Answer-A process that eliminates many or all microorganisms, with the exception of bacteria spores, from inanimate objects Decontamination/Sanitization - Answer-cleansing technique that mechanically removes microorganisms as well as other debris to reduce contamination to safe levels Antisepsis - Answer-removal of pathogens from living tissue Place the microbes in order of LEAST to MOST resistant to microbial control agents - Answer-enveloped viruses, fungi, bacterial endospores, prions An RN on a medical surgical unit would expect to perform all of the following antimicrobial control methods during her care of patients except: - Answer-sterilization When disinfection occurs, the death of the whole population is often instantaneous. - Answer-false Which type of cells tend to die more quickly? - Answer-active cells Cellular targets of physical and chemical agents include: - Answer-cell wall cytoplasmic membrane DNA RNA Proteins Discuss the difference between boiling water and Pasteurization - AnswerPasteurization deals with applying heat to liquids while boiling water is using the hot liquid- water to disinfect non liquids What is desiccation and how does it stop microbial growth? - Answer-when vegetative cells that are exposed to normal room air become dehydrated which kills them. What is lyophilization and how does it affect microbial growth? - Answer-This is a combination of freezing and drying that preserves microorganisms and other cells in a viable state for many years. This method avoids the formation of ice crystals that harm the cell and this permits future reconstitution. What is the difference between Ionizing radiation sterilization and noniodizing radiation sterilization? Give 1 example of the applications of each. - Continues...