Which of the following compounds exists as a | vedclass

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Question

(A) zwitterion is a molecule that contains both a positive and a negative charge,resulting in a net charge of zero. Amino acids,which contain both an

Vedclass · Accepted Answer

$C_6H_5CH_2CH(NH_2)COOH$

Vedclass · Answer

(A) zwitterion is a molecule that contains both a positive and a negative charge,resulting in a net charge of zero. Amino acids,which contain both an acidic carboxyl group $(-COOH)$ and a basic amino group $(-NH_2)$,exist as zwitterions in aqueous solution. Among the given options,$C_6H_5CH_2CH(NH_2)COOH$ (Phenylalanine),$(CH_3)_2CHCH(NH_2)COOH$ (Valine),and $HOOCCH_2CH_2CH(NH_2)COOH$ (Glutamic acid) are amino acids. However,in standard multiple-choice contexts for this specific question,the structure representing a simple $\alpha$-amino acid is typically the intended answer. Given the options provided in the prompt were structurally incorrect or incomplete,the standard amino acid $C_6H_5CH_2CH(NH_2)COOH$ is the correct representation of a zwitterionic species.

Peptide	$R_1$	$R_2$
$I$	$H$	$H$
$II$	$H$	$CH_3$
$III$	$CH_2COOH$	$H$
$IV$	$CH_2CONH_2$	$(CH_2)_4NH_2$
$V$	$CH_2CONH_2$	$CH_2CONH_2$
$VI$	$(CH_2)_4NH_2$	$(CH_2)_4NH_2$
$VII$	$CH_2COOH$	$CH_2CONH_2$
$VIII$	$CH_2OH$	$(CH_2)_4NH_2$
$IX$	$(CH_2)_4NH_2$	$CH_3$

$(A)$ Lysine	$(B)$ Serine
$(C)$ Tyrosine	$(D)$ Valine

List-$I$ (Amino acid)	List-$II$ (Positive reaction/Test for functional group present in side chain of amino acid)
$A$. Glutamine	$I$. Hinsberg's test
$B$. Lysine	$II$. Neutral $FeCl_3$ test
$C$. Tyrosine	$III$. Ceric ammonium nitrate test
$D$. Serine	$IV$. Hoffman bromamide degradation

Which of the following compounds exists as a zwitterion?

Similar Questions

In which of the following amino acids is the $-OH$ group present?

$(A)$ Lysine $(B)$ Serine

$(C)$ Tyrosine $(D)$ Valine

Which of the following is a condensation polymer?

Which of the following amino acids contains the $HN=C(NH_2)-$ linkage?

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