A - In the solution of different pH,the struc | vedclass

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(A) Amino acids are amphoteric molecules containing both an acidic carboxyl group $(-COOH)$ and a basic amino group $(-NH_2)$.Due to the ionisable nat

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Both $A$ and $R$ are correct.

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(A) Amino acids are amphoteric molecules containing both an acidic carboxyl group $(-COOH)$ and a basic amino group $(-NH_2)$.Due to the ionisable nature of these groups,they can exist in different ionic forms depending on the $pH$ of the solution.In an acidic solution,the $-NH_2$ group accepts a proton to become $-NH_3^+$.In a basic solution,the $-COOH$ group loses a proton to become $-COO^-$.Therefore,the structure of amino acids changes with varying $pH$,making both the assertion and the reason correct.

$A$ - In the solution of different $pH$,the structure of amino acids changes.
$R$ - It is because of the ionisable nature of $-NH_2$ and $-COOH$ groups.

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$A$ - In the solution of different $pH$,the structure of amino acids changes.$R$ - It is because of the ionisable nature of $-NH_2$ and $-COOH$ groups.