Podcast
Questions and Answers
Sanitization leaves an object free of microbes.
Sanitization leaves an object free of microbes.
False
Ionizing radiation can penetrate surfaces, but nonionizing radiation cannot.
Ionizing radiation can penetrate surfaces, but nonionizing radiation cannot.
True
Moist-heat sterilization protocols require the use of higher temperatures for longer periods of time than do dry-heat sterilization protocols.
Moist-heat sterilization protocols require the use of higher temperatures for longer periods of time than do dry-heat sterilization protocols.
False
Soaps are classified as disinfectants.
Soaps are classified as disinfectants.
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Mercury-based compounds have fallen out of favor for use as preservatives and antiseptics.
Mercury-based compounds have fallen out of favor for use as preservatives and antiseptics.
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A medical item that comes into contact with intact skin and does not penetrate sterile tissues or come into contact with mucous membranes is called a(n) ________ item.
A medical item that comes into contact with intact skin and does not penetrate sterile tissues or come into contact with mucous membranes is called a(n) ________ item.
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The goal of ________ ________ protocols is to rid canned produce of Clostridium botulinum endospores.
The goal of ________ ________ protocols is to rid canned produce of Clostridium botulinum endospores.
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In an autoclave, the application of pressure to ________ is increased to allow the steam to achieve temperatures above the boiling point of water.
In an autoclave, the application of pressure to ________ is increased to allow the steam to achieve temperatures above the boiling point of water.
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Doorknobs and other surfaces in clinical settings are often coated with ________, ________, or ________ to prevent the transmission of microbes.
Doorknobs and other surfaces in clinical settings are often coated with ________, ________, or ________ to prevent the transmission of microbes.
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If a chemical disinfectant is more effective than phenol, then its phenol coefficient would be ________ than 1.0.
If a chemical disinfectant is more effective than phenol, then its phenol coefficient would be ________ than 1.0.
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If used for extended periods of time, ________ germicides may lead to sterility.
If used for extended periods of time, ________ germicides may lead to sterility.
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In the disk-diffusion assay, a large zone of inhibition around a disk to which a chemical disinfectant has been applied indicates ________ of the test microbe to the chemical disinfectant.
In the disk-diffusion assay, a large zone of inhibition around a disk to which a chemical disinfectant has been applied indicates ________ of the test microbe to the chemical disinfectant.
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Study Notes
Control of Microbial Growth
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Sanitization does not eliminate all microbes; it reduces their numbers to safe levels, making the statement false.
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Ionizing radiation effectively penetrates various surfaces, while nonionizing radiation lacks this capability, confirming the statement as true.
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Moist-heat sterilization is typically conducted at lower temperatures compared to dry-heat sterilization, making the claim about higher temperatures false.
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Soaps are primarily cleaning agents rather than disinfectants, which renders the assertion false.
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Mercury-based compounds have seen a decline in use for preservatives and antiseptics due to safety concerns, indicating this statement is true.
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A medical item that touches intact skin, without contact with sterile tissues or mucous membranes, is categorized as a noncritical item.
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Commercial sterilization aims to eliminate Clostridium botulinum endospores from canned goods, emphasizing the need for effective pathogen control in food products.
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In autoclaves, steam pressure must be elevated to surpass water's boiling point, enabling effective sterilization processes.
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Clinical surfaces, like doorknobs, are often treated with metals such as copper, nickel, or zinc to combat microbial transmission.
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A phenol coefficient greater than 1.0 indicates that a disinfectant is more effective than phenol itself.
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High-level germicides have the potential to induce sterility when used for prolonged periods.
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In the disk-diffusion assay, a considerable zone of inhibition signifies susceptibility or sensitivity of the microorganism to the applied chemical disinfectant, providing insight into its efficacy.
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Description
Test your knowledge on microbial growth control with this chapter 13 review. Engage with true/false statements and fill-in-the-blank questions designed to reinforce your understanding of sterilization and sanitation methods. Perfect for students looking to solidify their grasp on key concepts from their microbiology studies.
