Physical and Chemical Agents Which of the following is best used for long term storage of microbial samples when carried out properly? Storage in a freezer at ultra low temperatures (-70°C) Storage in a refrigerator on an agar slant Storage on a petri plate at room temperature Storage in a freezer at -10°C Storage in a freezer at ultra low temperatures (-70°C) Storage in a refrigerator on an agar slant Storage on a petri plate at room temperature Storage in a freezer at -10°C ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following describes the effect of ionizing radiation on microbes? Changes the 3-dimensional structure of proteins to a 2-dimen-sional form Substantially decreases enzymatic activity, slowing microbial reproduction Induces electrons and protons to jump out of the molecules of the microbe None of these Changes the 3-dimensional structure of proteins to a 2-dimen-sional form Substantially decreases enzymatic activity, slowing microbial reproduction Induces electrons and protons to jump out of the molecules of the microbe None of these ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following skin disinfectant(s) is/are most frequently used? Both (a) and (b) Ethyl alcohol Isopropyl alcohol none of these Both (a) and (b) Ethyl alcohol Isopropyl alcohol none of these ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is a limitation of the autoclave? It takes too long to sterilize It will destroy heat labile materials It lacks the ability to kill endospores It lacks the ability to inactivate viruses It takes too long to sterilize It will destroy heat labile materials It lacks the ability to kill endospores It lacks the ability to inactivate viruses ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which disinfectant was the most effective against Salmonella"? Hexachlorophene Phenol Merthiolate Cetylpyridinium chloride Hexachlorophene Phenol Merthiolate Cetylpyridinium chloride ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Microbes can be removed from a liquid solution by the process of osmosis freeze-drying desiccation filtration osmosis freeze-drying desiccation filtration ANSWER DOWNLOAD EXAMIANS APP
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