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

Chemical Gases: Ethylene Oxide, Ozone, & Formaldehyde

Microbiology

11. Controlling Microbial Growth

Chemical Gases: Ethylene Oxide, Ozone, & Formaldehyde

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Multiple Choice

Which of the following statements about ozone is FALSE?

It can be used to disinfect drinking water.

It is a strong oxidizing agent.

It causes cell lysis when free radicals form in water.

It is a surfactant.

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Verified step by step guidance

Understand the properties of ozone: Ozone (O₃) is a molecule composed of three oxygen atoms. It is known for its strong oxidizing properties, which make it effective in disinfection processes.

Evaluate the statement about ozone being used to disinfect drinking water: Ozone is indeed used in water treatment facilities to disinfect drinking water due to its ability to kill bacteria and other pathogens.

Consider the statement about ozone being a strong oxidizing agent: Ozone is a powerful oxidizing agent, which means it can accept electrons from other substances, leading to chemical reactions that can destroy microorganisms.

Analyze the statement about ozone causing cell lysis: Ozone can cause cell lysis by generating free radicals in water, which can damage cell membranes and lead to the destruction of cells.

Examine the statement about ozone being a surfactant: A surfactant is a substance that reduces surface tension between two liquids or a liquid and a solid. Ozone does not have surfactant properties; it does not reduce surface tension, making this statement false.