Okay, everyone. What do we know about chlorohexidine? We know that chlorohexidine is going to be a form of chemical microbial growth control. So let's have a look at our answers. Answer number a says it is a member of the biguanides or biguanides group. Yes. It most certainly is. Answer choice b says it is extensively used as an antiseptic. Remember that an antiseptic is a chemical that controls microbial growth that is safe to use on skin or on the body. And, yes, chlorhexidine is safe to use in small concentrations on the body. And it's commonly in things like toothpaste and mouthwash and stuff like that. That's the chemical in those substances that you put in your body to get microbes out of your mouth. Answer choice c says, is ineffective against vegetative cells. Remember that vegetative cells are just bacteria in their normal everyday state. They're reproducing, they're doing all the normal bacterial things. That's a vegetative cell. The opposite would be like a dormant cell that's not doing anything. These are vegetative cells and no, it is not in effective against vegetative cells. It kills these cells quite easily and the way it does this is it disrupts the cell membrane around the cell, which will cause that cell to die. So that's not true. It's actually quite effective against vegetative cells. Answer choice d says is limited in use due to high toxicity. It is not limited in use. It's actually commonly used in a lot of our everyday antiseptics. Like I said, toothpaste and mouthwash, And it's only highly, highly toxic if it's in very, very large concentrations or quantities. But small concentrations, I believe less than 5 percent. And I think in mouthwash less than 1%, it's totally safe and perfectly fine. So that is not true. So the correct answers here are answer choice a and answer choice b. So the correct answer here is answer choice e. 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

Chlorhexidine:

Is a member of the biguanides group.

Is extensively used as an antiseptic.

Is ineffective against vegetative cells.

Is limited in use due to its high toxicity.

A and B.

C and D.

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Verified step by step guidance

Understand the properties of Chlorhexidine: Chlorhexidine is a chemical compound that belongs to the biguanides group and is widely used as an antiseptic.

Evaluate statement A: Chlorhexidine is indeed a member of the biguanides group, which is correct.

Evaluate statement B: Chlorhexidine is extensively used as an antiseptic, which is also correct.

Evaluate statement C: Chlorhexidine is effective against vegetative cells, so the statement that it is ineffective is incorrect.

Evaluate statement D: Chlorhexidine is not limited in use due to high toxicity; it is generally considered safe for use in various applications, making this statement incorrect.