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 -10°C Storage in a refrigerator on an agar slant Storage on a petri plate at room temperature Storage in a freezer at ultra low temperatures (-70°C) Storage in a freezer at -10°C Storage in a refrigerator on an agar slant Storage on a petri plate at room temperature Storage in a freezer at ultra low temperatures (-70°C) ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is sterilized with the help of glutaraldehyde? All of these Thermometers Bronchoscopes Cystoscopes All of these Thermometers Bronchoscopes Cystoscopes ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following disinfectants act by disrupting microbial membranes? Cationic detergents Aldehydes Heavy metals Halogens Cationic detergents Aldehydes Heavy metals Halogens ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents The time required to kill 90% of the microorganisms in a sample at a specific temperature is the thermal death point D value F value decimal reduction time thermal death point D value F value decimal reduction time ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Preservation of foods by using salts and sugars works by raising pH creating a hypertonic environment lowering osmotic pressure creating a hypotonic environment raising pH creating a hypertonic environment lowering osmotic pressure creating a hypotonic environment ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following has most heat resistant spores? Clostridium histolyticum Clostridium perfringens Bacillus stearothermophilus Bacillus cereus Clostridium histolyticum Clostridium perfringens Bacillus stearothermophilus Bacillus cereus ANSWER DOWNLOAD EXAMIANS APP
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