Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

11. Controlling Microbial Growth

Review of Chemicals Used to Control Microbial Growth

Microbiology

11. Controlling Microbial Growth

Review of Chemicals Used to Control Microbial Growth

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Multiple Choice

Place the following surfactants in order from the most effective to the least effective antimicrobial activity:
1-Soap; 2-detergent; 3-Quats.

1, 2, 3

1, 3, 2

2, 1, 3

3, 2, 1

3, 1, 2

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Verified step by step guidance

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.