Review Questions/study Guide For Microbiology Chapters 7-9

Review questionsChapter 7Decontamination is defined as the a. killing of all microorganisms in a given area. b. reduction or removal of unwanted chemical or biological agents. c. stopping of growth of microorganisms in a given area. d. removal of all vegetative organisms.Which of the following organisms has higher resistance to most physical control methods than the others? a. Protozoan cysts b. Fungal spores c. Enveloped viruses d. Vegetative bacterial cellsThe cleaning of glassware and tableware in restaurants falls in the category of a. degermination. b. sterilization. c. disinfection. d. sanitation.Which of the following methods is the simplest heat-related method to sterilize metal? a. Boiling b. Autoclaving c. Direct flaming d. Indirect heatingBoiling items in water for __________ minutes will kill most vegetative bacteria and viruses. a. 3 to 5 b. 5 to 6 c. 6 to 8 d. 10 to 15The technique that combines freezing and drying to preserve microbes and other cells is a. desiccation.