Textbook Question
Compare the method of action of the following pairs:
a. penicillin and echinocandin
b. imidazole and polymyxin B
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11. Controlling Microbial Growth
Review of Chemicals Used to Control Microbial Growth
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Place the following surfactants in order from the most effective to the least effective antimicrobial activity:
1-Soap; 2-detergent; 3-Quats.
A
1, 2, 3
B
1, 3, 2
C
2, 1, 3
D
3, 2, 1
E
3, 1, 2
Verified step by step guidance1
Understand the role of surfactants in antimicrobial activity. Surfactants are compounds that lower the surface tension between two substances, such as a liquid and a solid. They can disrupt microbial cell membranes, leading to cell death.
Identify the types of surfactants listed: Soap, detergent, and Quats (quaternary ammonium compounds). Each has different levels of effectiveness in disrupting microbial cell membranes.
Evaluate the antimicrobial effectiveness of each surfactant: Quats are known for their strong antimicrobial properties, often used in disinfectants. Detergents have moderate antimicrobial activity, while soaps are generally less effective.
Rank the surfactants based on their effectiveness: Quats are the most effective, followed by detergents, and then soaps.
Select the correct order from the given options: The order from most effective to least effective is Quats, detergent, soap, which corresponds to option 3, 2, 1.
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