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16 Cards in this Set
- Front
- Back
physical agent
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heat, radiation
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chemical agents
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disinfectants, antiseptics
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mechanical removal agents
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filtration, sanitization, degermation
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highest resistance
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bacterial endospores
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moderate resistance
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protozoan cysts, zygospores, some viruses (naked) Hepatitis B virus, poliovirus, Staphylococcus aureus, Pseudomonas.
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lowest resistance
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most bacterial vegetative cells, ordinary fungal spores and hyphae, enveloped viruses, trophozoites (vegetative from of protozoans).
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sterilization
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process that destroys or removes all viable microorganisms including bacterial endospores.
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disinfection
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physical process or chemical agent to destroy vegetative pathogen but not endospores
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antisepsis
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chemical agents applied directly to body surfaces to destroy or inhibit vegetative pathogens-swabbing with alcohol, hydrogen peroxide.
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sanitation
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cleansing technique that mechanically removes microbes to reduce the level of contaminatns-washing dishes.
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aseptic technique
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in lab, preventing the introduction of contaminating organisms into cultures-or ourselves.
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microbistatic
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microbes prevented from multiplying but not killed-prevents growth of microbes.
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microbicidal
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agent designed to kill microbes.
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microbial death
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the permanent loss of reproductive capability, even under optimum growth conditions.
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factors that influence microbial death
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1. the # of microbes-more harder to kill.
2. nature of microbes in popultion, mixtures-more types, harder to kill. 3. temperature and pH of environment-higher temp, easier to kill. 4. mode of action of agent. |
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sporicide
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a chemical agent capable of destroying bacterial endospores.
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