Disinfection of beverages such as apple juice, milk, wine is optimally achieved by
A. pasteurization.
B. chlorination.
C. moist heat autoclave.
D. filtration.
E. boiling water.
Answer: A
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Microbiology Chapter 9
- Which of the following represents the use of osmotic pressure as a microbial control method?
- Antimicrobial agents can target the cell wall by
- In lab, inoculating loops are sterilized using
- Which of the following acids is not used to destroy or inhibit microbial cells in food?
- Ethylene oxide is
- Which of the following is not used as an antiseptic?
- Heavy metals work by
- All of the following disrupt the cytoplasmic membrane except
- Hydrogen peroxide can be
- The chemical agent that produces highly toxic and reactive free radicals is
- Alcohols
- The compound that is an organic base containing chlorine and two phenolic rings, and is used increasingly for mucous membrane irrigation, obstetrical washes, hand scrubbing, and prepping surgical skin sites is
- ____ is a halogen used in gaseous and liquid form for large-scale disinfection of drinking water and sewage.
- All of the following pertain to hypochlorites except
- Which of the following is not a factor that affects germicidal activity?
- _____ is a control method that removes microorganisms rather than inhibiting or killing them.
- Filtration can result in sterilization of serum and blood products
- HEPA filters are used to remove microbes from
- Which of the following forms of radiation is in order from the most penetrating to the least penetrating?
- Which control method would not be a suitable choice for killing Mycobacterium in a capped culture tube?
- Which of the following items are typically irradiated in order to kill microbes?
- _____ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.
- Removal of moisture by dehydration is called
- Vials of microorganisms that undergo the freeze-drying process called _____ will remain preserved and viable for years.
- What instrument is most effective for pressure-temperature sterilization?
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