Physical and Chemical Agents Sweet and salty foods frequently don't require refrigeration to prevent spoilage because they have insufficient nutrients low pH high concentration of solutes toxic alkaline chemicals insufficient nutrients low pH high concentration of solutes toxic alkaline chemicals ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following items could be sterilized by dry heat sterilization? rubber gloves Plastic IV bags Intravenous (IV) solution Glass pipettes rubber gloves Plastic IV bags Intravenous (IV) solution Glass pipettes ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is best used for long term storage of microbial samples when carried out properly? Storage on a petri plate at room temperature Storage in a refrigerator on an agar slant Storage in a freezer at -10°C Storage in a freezer at ultra low temperatures (-70°C) Storage on a petri plate at room temperature Storage in a refrigerator on an agar slant Storage in a freezer at -10°C Storage in a freezer at ultra low temperatures (-70°C) ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents The lowest temperature that kills all microorganisms in a liquid suspension in 10 minutes is known as the thermal death point thermal death temperature thermal death time decimal reduction time thermal death point thermal death temperature thermal death time decimal reduction time ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following disinfectants act by disrupting microbial membranes? Aldehydes Halogens Cationic detergents Heavy metals Aldehydes Halogens Cationic detergents Heavy metals ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which is the most important surface active disinfectants? Cationic compounds Amphoteric compounds Anionic compounds Non-ionic compounds Cationic compounds Amphoteric compounds Anionic compounds Non-ionic compounds ANSWER DOWNLOAD EXAMIANS APP
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