Physical and Chemical Agents Preservation of foods by using salts and sugars works by creating a hypotonic environment creating a hypertonic environment lowering osmotic pressure raising pH creating a hypotonic environment creating a hypertonic environment lowering osmotic pressure raising pH ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents One drawback to the use of ultraviolet light as a sterilizing agent is its failure to kill microbes in a closed environment failure to bacterial spores failure to kill microbes located in the center of an object failure to kill bacteria failure to kill microbes in a closed environment failure to bacterial spores failure to kill microbes located in the center of an object failure to kill bacteria ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following items could be sterilized by dry heat sterilization? Plastic IV bags Glass pipettes Intravenous (IV) solution rubber gloves Plastic IV bags Glass pipettes Intravenous (IV) solution rubber gloves 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? All of these Swab sticks All-glass syringes Oils and jellies All of these Swab sticks All-glass syringes Oils and jellies ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following was the first widely used antiseptic and disinfectant? Iodine Chlorine Phenol Alcohol Iodine Chlorine Phenol Alcohol ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following describes the effect of ionizing radiation on microbes? Induces electrons and protons to jump out of the molecules of the microbe Substantially decreases enzymatic activity, slowing microbial reproduction None of these Changes the 3-dimensional structure of proteins to a 2-dimen-sional form Induces electrons and protons to jump out of the molecules of the microbe Substantially decreases enzymatic activity, slowing microbial reproduction None of these Changes the 3-dimensional structure of proteins to a 2-dimen-sional form ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS