PUBLIC HEALTH 320 MIDTERM|2023/24 UPDATE|GRADED A+

Cross-connection controls include air gaps, backflow preventers, vacuum breakers and a. gate valves b. indirect waste piping c. air vents d. water meters b. indirect waste piping A BSC national performance standard has been developed by a. NSF b. NSC c. NIH d. ABSA a. NSF Biological safety cabinets should be performance tested every a. 1 year b. 1 month c. 2 years d. 10 years a. 1 year The ASHRAE recommended minimal thermal standard for dwellings is ______ degrees F at 40% humidity and an air circulation rate of 45 fpm. a. 57 b. 60 c. 68 d. 76 d. 76 Campylobacter (C. jejuni/C. coli, C. fetus subsp. fetus) may be safely used in the laboratory as a minimum at a. biosafety level 1 b. biosafety level 2 c. biosafety level 3 d. biosafety level 4 b. biosafety level 2 Minimum wash water temperature in a hospital laundry is a. 146 to 150 degrees F b. 160 to 167 degrees F c. 170 to 178 degrees F d. 185 to 196 degrees F b. 160 to 167 degrees F Universal precautions refer to a. specific respiratory protection used in hospitals b. an infection control measure in which all human blood and certain body fluids are treated as infectious c. procedures used when handling hazardous wastes d. none of the above b. an infection control measure in which all human blood and certain body fluids are treated as infectious A class II biological safety cabinet (BSC) is designed to protect a. the work being done in the BSC b. the personnel using the BSC c. the environment d. all of the above d. all of the above Mobile homes have been in general production since a. 1943 b. 1954 c. 1965 d. 1970 b. 1954 The best approach to control of formaldehyde air pollution in the home is a. avoidance of the use of formaldehyde containing products b. the coating and sealing of materials containing formaldehyde c. increasing the amount of outside air d. all of the above d. all of the above Excessive condensation, corrosion, and mildew occur when the relative humidity exceeds a. 20 percent b. 40 percent c. 80 percent d. 60 percent d. 60 percent Biological safety equipment includes a. biosafety cabinets b. non-retractable needles and syringes c. personal protective equipment d. a and c d. a and c A clean bench should be considered for use a. as an alternative for a biosafety cabinet b. as an alternative for a fume hood c. only when there is no possible risk to personnel d. when protecting the laboratory environment c. only when there is no possible risk to personnel Laboratories working with infectious agents in a properly controlled setting have been shown to a. represent no threat to the community b. represent a real and continuous threat to the community c. represent a growing danger to the environment d. none of the above a. represent no threat to the community Radon is detected in a home through measurement of a. geiger rays b. beta particles c. alpha particles d. UV rays c. alpha particles Muerto Canyon virus (MCV) is a hantavirus mainly carried by a. woodchucks b. beavers c. deer mice d. skunks c. deer mice The implementation of a biosafety program begins with a. an assessment of risk b. the development of a biosafety manual c. training the laboratory personnel d. consultation with CDC and NIH a. an assessment of risk