30 Questions
Which method of heat sterilization is preferred when sterilizing glassware to avoid any residual moisture that can contaminate the surface?
Hot-air oven sterilization
What is the minimal time necessary for killing a population at a given temperature called?
Thermal death time
Which heat sterilization method kills bacteria by oxidizing cellular components?
Incineration
Which heat sterilization method is slower than moist heat?
Autoclaving
Which heat sterilization method requires long periods of exposure to high temperatures?
Hot-air oven sterilization
Which heat sterilization method is preferred for metallic medical instruments?
Autoclaving
Which heat sterilization method kills bacteria by coagulating/denaturing proteins?
Boiling
Which heat sterilization method requires less energy than oxidation?
Boiling
Which heat sterilization method can be used at a lower temperature and shorter exposure time than dry heat?
Boiling
Which heat sterilization method is used for blankets, bedding, and utensils?
Autoclaving
Which method of microbial control involves the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?
Sterilization
What is the term for an inanimate object that serves to transmit disease?
Fomite
Which type of microbial control method significantly reduces microbial numbers by using mild chemicals and gentle scrubbing of a small area of skin or tissue to avoid the transmission of pathogenic microbes?
Degerming
Which term refers to the application of chemicals for the removal of potential pathogens from living tissue?
Antiseptic
What is the term for a chemical that destroys bacteria?
Bactericide
What is the term for a chemical that inhibits/prevents the growth of bacteria?
Bacteriostatic
What is the term for a chemical that destroys fungi?
Fungicide
What is the term for a chemical that inhibits/prevents the growth of fungi?
Fungistatic
What is the term for a chemical that destroys viruses?
Viricide
What is the term for a chemical that destroys spores?
Sporocide
Which method is commonly used for ultra pasteurization?
140oC for 3 seconds
What is the temperature range for a freezer?
~-18oC
Which method is used to remove microorganisms from a solution or gas?
Filtration
What is the purpose of salting in the process of desiccation?
To induce water diffusion
What type of radiation is used to sterilize heat-sensitive pharmaceuticals?
Ionizing radiation
What is the most destructive wavelength of nonionizing radiation?
265nm
What happens to DNA when it absorbs sufficient UV light?
It forms thymine dimers
What is the main effect of microwaves on food?
To cook the food
What is the purpose of filtration using a HEPA filter?
To trap microorganisms
What is the purpose of membrane filtration?
To count the number of microorganisms in a solution
Test your knowledge on methods of microbial control and resistance in this quiz. Learn about the highest and least resistant microorganisms and understand the different methods of sterilization, aseptic technique, and sanitization.
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