Which of the following amino acids has the lo | vedclass

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Question

(C) The iso-electric point $(pI)$ of an amino acid depends on its side chain ($R$-group).Acidic amino acids,which contain an extra carboxylic acid gro

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Aspartic acid

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(C) The iso-electric point $(pI)$ of an amino acid depends on its side chain ($R$-group).Acidic amino acids,which contain an extra carboxylic acid group in their side chain,have lower $pI$ values.Aspartic acid is an acidic amino acid with two carboxylic acid groups and one amino group,resulting in a $pI$ of approximately $2.77$.Glycine and Alanine are neutral amino acids with $pI$ values around $6.0$.Lysine is a basic amino acid with an extra amino group,resulting in a high $pI$ value of approximately $9.74$.Therefore,Aspartic acid has the lowest $pI$.

List-$I$ Natural Amino acid	List-$II$ One Letter Code
$A$. Arginine	$I$. $D$
$B$. Aspartic acid	$II$. $N$
$C$. Asparagine	$III$. $A$
$D$. Alanine	$IV$. $R$

Which of the following amino acids has the lowest iso-electric point $(pI)$?

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Match List-$I$ with List-$II$

List-$I$ Natural Amino acid List-$II$ One Letter Code

$A$. Arginine $I$. $D$

$B$. Aspartic acid $II$. $N$

$C$. Asparagine $III$. $A$

$D$. Alanine $IV$. $R$

Choose the correct answer from the options given below :-

Which of the following describes the linkage of $\alpha-$amino acids in a protein molecule?

The $N$ atom which does not contribute to the basicity of the given compound is:

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