Okay, everyone. Here we have our next practice problem. Gluteraldehyde. What do we know about this? We know that it's a chemical and it's a chemical form of microbial growth control. We know it's an aldehyde because in its name it has aldehyde. Another very common aldehyde is formaldehyde. And we know that aldehydes are going to be chemical sterilants. So they kill all the different microbes except for prions. So what do we know about Glutaraldehyde? Let's have a look. Answer choice a says is if given enough time able to destroy all forms of microbial life. This is true, but it takes a very very very long time. I believe 12 to 24 hours. The particular thing you want to sterilize has to be in this chemical. So, yes, this is true. Let's have a look at image choice b. Forms cross links with active proteins rendering them inactive. This is one of the ways that Gluteraldehyde is going to create or cause damage to those microorganisms and killing those microorganisms. Answer choice C says disrupts and damages lipid membranes. One of the major things that it also does is that it damages the cell membranes of the microorganisms, which results in their death as well. And finally, is able to destroy one of the hardest types of microbes to kill, endospores. Yes. Endospores are very difficult to kill, but given enough time, glutaraldehyde can do that job. So in fact, all of these are true statements about glutaraldehyde, a chemical sterilant. Okay, everyone. Let's move on to our next video.

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

Liquid Chemicals: Alcohols, Aldehydes, & Biguanides

Microbiology

11. Controlling Microbial Growth

Liquid Chemicals: Alcohols, Aldehydes, & Biguanides

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Multiple Choice

Glutaraldehyde:

Is, if given enough time, able to destroy all forms of microbial life.

Forms cross-links with active proteins rendering them inactive.

Disrupts lipid membranes.

Is able to destroy one of the hardest types of microbes to kill, endospores.

All of the above.

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Verified step by step guidance

Understand the properties and mechanisms of glutaraldehyde as a chemical agent used in microbiology.

Recognize that glutaraldehyde is a potent disinfectant and sterilant, capable of destroying all forms of microbial life, including bacteria, viruses, fungi, and spores.

Learn how glutaraldehyde forms cross-links with proteins, which leads to the inactivation of these proteins and disrupts cellular functions.

Explore how glutaraldehyde disrupts lipid membranes, compromising the integrity of microbial cells and leading to their destruction.

Identify that glutaraldehyde is effective against endospores, which are one of the most resistant forms of microbial life, due to its ability to penetrate and destroy these tough structures.