Physical and Chemical Agents If a canning procedure is not properly followed, which type of microbe is most likely to grow in the canned food? Mesophile Acidophile Obligate Aerobe Obligate Anaerobe Mesophile Acidophile Obligate Aerobe Obligate Anaerobe ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following describes the effect of ionizing radiation on microbes? None of these Induces electrons and protons to jump out of the molecules of the microbe Changes the 3-dimensional structure of proteins to a 2-dimen-sional form Substantially decreases enzymatic activity, slowing microbial reproduction None of these Induces electrons and protons to jump out of the molecules of the microbe Changes the 3-dimensional structure of proteins to a 2-dimen-sional form Substantially decreases enzymatic activity, slowing microbial reproduction 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 F value thermal death point decimal reduction time D value F value thermal death point decimal reduction time D value ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following has most heat resistant spores? Bacillus stearothermophilus Bacillus cereus Clostridium perfringens Clostridium histolyticum Bacillus stearothermophilus Bacillus cereus Clostridium perfringens Clostridium histolyticum ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following material is sterilized by heating at 160°C in a hot air oven for one hour? Swab sticks Oils and jellies All of these All-glass syringes Swab sticks Oils and jellies All of these All-glass syringes ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Preservation of foods by using salts and sugars works by raising pH creating a hypotonic environment creating a hypertonic environment lowering osmotic pressure raising pH creating a hypotonic environment creating a hypertonic environment lowering osmotic pressure ANSWER DOWNLOAD EXAMIANS APP
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