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The following image shows the 20 amino acids found in proteinsChScoOHKMcoonHcoOHcoohHcoOA CysteineGlycinoAlaninoScrinoThreonineAn coOH ValincRncoOncoohHNcoOHCOOALcu...

Question

The following image shows the 20 amino acids found in proteinsChScoOHKMcoonHcoOHcoohHcoOA CysteineGlycinoAlaninoScrinoThreonineAn coOH ValincRncoOncoohHNcoOHCOOALcucincIsolcucincMethionineProlingcoChHcooucoOHcoOAcoohPhenylalanineTyrosincTryptophanApartic AcldGlutamic AcldVn-cochcoOHAcooF cooh LysineMr coon ArginineAsparagincGlutamineHistldineUsing this image, which of the following amino acids would be classified as a non-polar amino acid?A SerineB. ValineAsparagineD: Lysine E: Glutamic acid

The following image shows the 20 amino acids found in proteins ChS coOH KM coon H coOH cooh H coOA Cysteine Glycino Alanino Scrino Threonine An coOH Valinc Rn coOn cooh HN coOH COOA Lcucinc Isolcucinc Methionine Proling coCh H coou coOH coOA cooh Phenylalanine Tyrosinc Tryptophan Apartic Acld Glutamic Acld Vn- coch coOH A coo F cooh Lysine Mr coon Arginine Asparaginc Glutamine Histldine Using this image, which of the following amino acids would be classified as a non-polar amino acid? A Serine B. Valine Asparagine D: Lysine E: Glutamic acid



Answers

Acidic amino acids have two -COOH groups and one $-\mathrm{NH}_{2}$ group per molecule. Select the pair that consists of acidic amino acids. (a) Aspartic acid, glutamic acid (b) Lysine, arginine (c) Glycine, alanine (d) Both (a) and (b)

In this question, we're asked to look at three Amino acids and describe these amino acids and their characteristics. So to start we have a line, we are supposed to first look at if the amino acid is polar, non polar hydrophobic or hydrophobic. So looking at um alan in the substitution on allen is a methyl group right here. This method group does not introduce any polarity into the molecule as it's relatively small and it's only an out pill group. So because it doesn't introduce any polarity into the molecule, we can label this as non polar based on its our group being non polar. The our group similarly does not help the amino acid dissolve in water as it does not introduce an acidic or basic characteristic to the amino acids. So we can also label it as hydrophobic. Our next amino acid is final alunan phenylalanine introduces a final group attached to the alunan. So we have our metal from our original group and then we have the final group added on there. So you can see where the name comes from, Final eleni. So I feel like that's a good way to remember it. If you're trying to memorize these structures for the um cat. Sorry, we're just going to better underline that. So final valentine has a final group on it, which is basically just a benzene ring. So an aromatic ring. Benzene rings are only composed of carbons and hydrogen. So it should clue you in that. This is relatively non polar as well. So we can go ahead and label this as non polar. Furthermore, the exposure, a bunch of hydrocarbons would make this amino acid relatively hydrophobic as well. Our final amino acid is Sistine. Sistine introduces a sulfur in its structure in the long structure that comes off of a methyl group. And then we have our sulfur bonded to a hydrogen, sulfur is a relatively electro negative atom. So introducing it into the amino acid does introduce a molecular dipole. So we are able to label this amino acid as polar. However, even with the additional polarity, this molecule will still remain neutral at physiological ph H. This can be explained by the fact that the molecule will not be deep resonated or protein ated at physiological ph because the sulfur group does not readily lose its hydrogen. Because of this, we can also assume that the molecule is relatively hydrophobic, but we'll just go with labeling these for now, because that's all the question asks for. Okay, thank you.

What is an accurate statement that we can say about the specific amino acid called lysine? An accurate statement that we can make specifically about losing is is likely to appear in the part of a membrane protein that lies within the fossil, lifted by layer. Yeah.

From the given diagram Brandi Given diagram, we can conclude that we can conclude that I mean what I said um you know acid used in the diagram used in the diagram. Um as follows, I'm just writing all the name. Just look at it carefully. These are the name we are used. Indeed, diagram. So according to the options in this problem, we can say that option it corrected.

Let's classify the following immediate acids for a Argentine. Yeah, Argentine is a polar basic amino acid for beef. Loose scene. Mhm is classified as a non polar neutral amino acid. Yeah, for C re, tannic acid is classified as a polar acidic amino acid. Two D Spirit Jean is classified as a polar neutral amino acid. Yeah, for e kerosene, classified as a polar acidic amino acid for F phenylalanine was classified as a non polar neutral. I mean the acid and Fergie Kweisi classified as a non polar? Yeah, neutral amino acid, Mhm.


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