Which method of microbial control does not rely on...

Which method of microbial control does not rely on denaturing proteins and/or disrupting the integrity of the cell membrane? - Treatment with iodophors - Treatment with alcohols - Lyophilization - Autoclaving Which substance would be most useful as an antiseptic? - Iodine - Chlorine - Boiling - Ethylene oxide Halogens denature protein by affecting which bonds? - Hydrogen bonds - Peptide bonds - Disulfide bonds - Ionic bonds Selective toxicity is the ability of a chemical or drug to kill a microorganism without harming its host. Which of the following antibiotics shows low selective toxicity? - Isoniazid - Penicillin - Neomycin - Rifamycin

Transcript

00:01 Hello students, today's question is about which of the following method does not rely on denaturing protein.

00:07 So which means that any of those method which does not destroy the protein.

00:13 So the correct answer is lyophilization.

00:16 This is the correct answer and rest we can remove.

00:20 So what it is? so it is a process.

00:23 It is known as a freeze drying.

00:25 It is known as a freeze drying process.

00:29 And it happen is that so low temperature dehydration process it is a low temperature dehydration process.

00:45 So what does it mean? it means that we are freezing the product.

00:49 We are freezing the product lowering the pressure, lowering the low down the pressure.

00:57 Then what will we do so we will remove the ice by the sublimation ice removal by the sublimation so this is the process of the liophilization so what does it mean so why do we do it so it allow us to remove ice or water allow us to remove ice or water from a product from a product from our product without destroying the molecule.

01:32 So it will not destroy the molecule without destroying the molecule.

01:38 So that is why we use it.

01:40 That is why we use it because it will not, it will not remove the volatile molecules.

01:47 So, so that is why it is used.

01:52 Next option is, next is what is best antiseptic.

01:56 Iodin, chlorine, boiling, ethyl and oxide.

01:59 So iodine is the correct answer.

02:01 Because we know that the iodine, that is a blue solution.

02:04 Blue solution, the healthcare professionals use on the wound.

02:09 Use on the wound because it is a best -to -recognized antiseptic used by the health practitioners.

02:17 Next, halogen effect, which bond? hydrogen peptide, disulfide, ionic.

02:22 So, disulfide is the correct answer.

02:25 Dysulfide is the correct answer because halogens, halogens tend to disrupt the protein and other macromolecules as well not only protein other macro molecules as well as well but regarding the protein regarding the protein so halogens what does they do so these halogens will oxidize them oxidize the cellular they oxidize the cellular component.

03:04 We know that protein.

03:06 So the amino acids.

03:08 Amino acids containing sulfur group...

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