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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 |