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Microbiology
CH 19 Review Questions
Question | Answer |
---|---|
Decontamination is defined as the | Reduction or removal of unwanted chemical or biological agents |
? has a higher resistance to most physical control methods than the others | Protozoan cysts |
The cleaning of glassware and tableware in restaurants falls in the category of | Sanitation |
? is the simplest heat related method to sterilize metal | Direct flaming |
Boiling items in water for ? minutes will kill most vegetative bacteria and viruses | 10-15 |
The technique that combines freezing and drying to preserve microbes and other cells is | Lyophilization |
Ionizing radiation does not involve | UV light |
The term "zone of inhibition" is used in which procedure | Disk diffusion test |
Chlorine belongs to which chemical group | Halogens |
? is not a method for food preservation | Sterilization |
Destruction of vegetative mircroorganisms via chemical or physical methods | Disinfection |
? indicates that microbial growth is at a standstill | Microbiostatic |
The effects of different kinds of radiation depend on | time of exposure, wavelength |
A toxic odorless gas often used as a sterilizing agent in hospitals and dental offices is | Ethylene oxide |
Phenol and phenolics can | kill you |
? reduce surface tension of solvents so that the solvent becomes more effective at dissolving solute molecules | Surfactant |