Okay, everyone. Here we have our next practice problem. An iota four is what? Okay. So we've been talking about different chemical disinfectants and sterilants and antiseptics that are used to control microbial growth. Iodine is a halogen that you can use to disinfect surfaces. And we commonly use it in a form called an Iodophore. Now, what is the Iodophore? Let's have a look at our answers. A highly concentrated form of iodine in a water alcohol solution. It is going to be in a water alcohol solution. So an iotaphor is a form of a tincture, and a tincture is going to be a solution that's mostly water and alcohol, and then a little bit of whatever disinfectant or medicine that you are using. For example, iodine. So you're gonna have a tiny amount of iodine in a large volume of alcohol or water, and that allows the iodine to be diluted. And when it's diluted, it's safe to use around human beings and even on their skin. But it's not highly concentrated because iodine, along with many other chemicals, are toxic in high concentrations. So it's not highly concentrated, it's a low concentration of iodine in a water alcohol solution. Yes. That's true. So that's not the answer that we're looking for. Answer choice b says, an iota-four is a 2% diluted form of iodine in a water alcohol solution. This is perfect. 2%, really low amount. This is the normal amount of iodine in an iodo-four, and the rest of the solution, the other 98%, is gonna be alcohol and water. So this is a great answer. Let's rule out the other 2. Answer choice c says, it's an undiluted form of iodine. That would be incredibly toxic, so no, we're not going to use undiluted a 100 percent iodine. And answer choice d says, is a solid form of iodine. First off, it would be toxic because it's a 100 percent iodine, and I don't know how we would use a solid to disinfect surfaces, that would be kind of unusual, so that's not the answer either. The correct answer here is answer choice of b. And iodo-four is a 2% diluted form of iodine in a water alcohol solution that is commonly used as a disinfectant and an antiseptic. 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: Halogens

Microbiology

11. Controlling Microbial Growth

Liquid Chemicals: Halogens

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Multiple Choice

An iodophor is:

A highly concentrated form of iodine in a water-alcohol solution.

A 2% diluted form of iodine in a water-alcohol solution.

A undiluted form of iodine.

A solid form of iodine.

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Verified step by step guidance

Understand the term 'iodophor': An iodophor is a complex of iodine with a solubilizing agent, typically used as a disinfectant.

Recognize the properties of iodophors: They are designed to release iodine slowly, which enhances their antimicrobial activity while reducing the potential for irritation.

Identify the typical composition of iodophors: They are usually a diluted form of iodine, often around 1-2%, mixed with a water-alcohol solution.

Distinguish iodophors from other forms of iodine: Unlike undiluted or solid forms, iodophors are specifically formulated for controlled release and solubility in aqueous solutions.

Conclude that the correct description of an iodophor is a 2% diluted form of iodine in a water-alcohol solution, which aligns with its intended use and formulation.