18 Questions
What type of phage allows phages to take a bit of the adjacent bacterial DNA?
Temperate phage
Which process describes the spread of antibiotic resistance genes facilitated by mobile DNA segments?
Transposons
What is the term for destroying endospores of Clostridium botulinum?
Commercial sterilization
Which agent inhibits the growth of bacteria without killing them?
Bacteriostatic agent
Which of the following is true about alcohols used as disinfectants?
They can kill bacteria and fungi but not endospores or naked viruses
In genetic transfer among bacteria, which process involves cells becoming immune to reinfection by the same phage?
Lysogenic conversion
Which of the following heavy metals exhibits oligodynamic action and is used as a disinfectant?
Silver
What is the term for the destruction of harmful microorganisms in inanimate objects?
Disinfection
What is the main advantage of quaternary ammonium compounds (Quats) as antimicrobial agents?
They function as cationic detergents
What is the difference between resident flora and transient flora in the human body?
Resident flora are fixed types, regularly found, while transient flora temporarily inhabit the body
What factors contribute to eliminating non-resident flora from the skin?
Presence of lysozyme
Which antimicrobial agent is known for its oligodynamic action and effectiveness against bacteria and fungi?
Copper sulfate
What advantage do phenolics have as antimicrobial agents?
They persist for a long time
Which halogen is found in tincture of iodine?
Iodine
How does formaldehyde function as a disinfectant?
By denaturing proteins
What is the advantage of using glutaraldehyde over formaldehyde as a sterilizing agent?
It is less irritating and more effective
Which antimicrobial agent is known for being a sporicide at higher temperatures?
Hydrogen peroxide
How does ethylene oxide act as a gaseous sterilizer?
By replacing functional groups with alkyl groups
Test your knowledge on disinfectants like alcohols, heavy metals, and quaternary ammonium compounds. Learn about their effectiveness against bacteria, fungi, and viruses. Understand the optimal concentrations for disinfection.
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