A: chlorine dioxide gas B: ethylene oxide gas C: Ultra Violet light D: X-rays 39: Halogens, such as ____, work by ____ proteins. A: chlorine; oxidizing B: silver; denaturing C: iodine; reducing D: mercury; inactivating 40: What sterilization techniques should be used for a toxoid preparation for immunization? A: Gamma irradiation B: Filtration C: Direct flame D: Autoclaving 41: Which of the following is a common means of contaminating food? A: Airborne organisms land on food. B: Soilborne bacteria is not removed from vegetables. C: Shellfish concentrate bacteria by straining contaminated water. D: All of the above are correct. 42: Which of the following are signs that food has spoiled? A: Juice that smells like alcohol. B: Cheese that has more than one color in it. C: Bread that has sat on the counter for a week. D: None of the above are correct. 43: ____ is prepared commercially by adding salt to shredded cabbage under anaerobic conditions. A: Soy sauce B: Pickles C: Sauerkraut
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