Multiple Choice
Which of the following correctly describes what the video referred to as a 'microbial cure'?
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1. Introduction to Microbiology
Introduction to Microbiology
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Which of the following is a high-level disinfectant capable of inactivating biological spores?
A
Chlorhexidine
B
Quaternary ammonium compounds
C
Glutaraldehyde
D
Alcohol (ethanol)
Verified step by step guidance1
Understand what a high-level disinfectant is: it is a chemical agent capable of killing all microorganisms, including bacterial spores, which are among the most resistant forms of life.
Review the properties of each disinfectant option: Chlorhexidine and Quaternary ammonium compounds are effective against many bacteria and viruses but generally do not inactivate spores.
Recognize that Alcohol (ethanol) is effective against many bacteria and viruses but is not sporicidal, meaning it cannot reliably kill bacterial spores.
Identify Glutaraldehyde as a high-level disinfectant known for its ability to inactivate bacterial spores, making it suitable for sterilizing medical instruments that cannot withstand heat.
Conclude that among the given options, Glutaraldehyde is the only one classified as a high-level disinfectant capable of inactivating biological spores.
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