Openstax Microbiology - Chapter 13 Exam Questions and Answers Latest Update 2025 Already Passed

Openstax Microbiology - Chapter 13 Exam Questions and Answers Latest Update 2025 Already Passed Formites - Answers any non-living object that can be contaminated by microbes. The Centers for Disease Control and Prevention (CDC) and the National Institutes of Health (NIH) have established 4 classification levels called ________. - Answers Biological Safety Levels (BSL) BSL-1 - Answers Microorganisms not known to cause disease in healthy adults. BSL-2 organisms - Answers present a moderate environmental and or health hazard, can cause a disease but is treatable BSL-3 organisms - Answers have potential to cause lethal infections by inhalation. Divert from foreign location. Ex. HIV, West Nile Virus BSL-4 organisms - Answers Most dangerous and often fatal. These microbes are typically exotic, are easily transmitted by inhalation and cause infectious for which there's no treatment or vaccinations. Autoclave - Answers use moist heat, high pressure steam to serialize. Sterilization - Answers removal of ALL microbes. - lab uses autoclaves to sterilize tubes and plates. Asepsis - Answers treatments that decrease microbe numbers on LIVING TISSUES. Aseptic technique - Answers any procedure that minimizes contamination to a patient. - example: using sterile equipment and sterilizing or disposing of contaminated equipment properly. Antiseptic(s) - Answers chemicals that decrease microbe numbers. Commercial sterilization - Answers kills disease causing microbes, but not microbes that grow at high temperatures. does commercial sterilization truly sterilize? - Answers no, does not kill microbes that grow at high temperatures. What is commercial sterilization trying to eliminate and for what reason? - Answers intended to kill clostridium botulinum endospores to prevent botulism poisoning. Which requires longer exposure to formites, disinfection or sanitization? - Answers disinfection does disinfecting something achieve sterilization? - Answers no, does not destroy endospores. does sanitizing something achieve sterilization - Answers no, does not destroy endospores. sanitization define - Answers the process of reducting microbial contamination to an acceptable "safe" level. what two methods of reducing microbes is used to meet public health standards? - Answers disinfection and sanitization. _______ is an example of a natural disinfection. - Answers vinegar examples of antiseptics - Answers isopropyl alcohol; hydrogen peroxide degerming - Answers removes microbes by scrubbing, such as washing with ordinary soap. example: bathing/showering, using high pressure sprays chemicals that kill microbes. - Answers -cidal what do fungicidal chemicals do? - Answers kill fungi. chemicals that inhibit microbial growth. - Answers -static what do bacteriostatic chemicals do - Answers slow microbial growth sanitization - Answers removal of pathogens from objects to meet public health standards are food preservatives' -cidal or -static - Answers -static Bactericides (Disinfectants) - Answers Used to clean surfaces other than skin -kill bacteria Fungicides kill... - Answers Fungi bacteriostatic treatments - Answers inhibit growth of bacteria fungistatic - Answers An agent that inhibits the growth of fungi -static - Answers Thermal death point (TDP) - Answers the lowest temperature required to kill all microbes in a sample in 10 minutes Thermal death time (TDT) - Answers shortest length of time required to kill all test microbes at a specified temperature Antiseptics are: - Answers safe and effective to use on human skin