Among the alpha-amino acids - threonine,tyros | vedclass

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(B) The correct option is $(B)$.An aromatic amino acid is an amino acid that includes an aromatic ring in its side chain.$1$. Tyrosine contains a phen

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tyrosine and tryptophan

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(B) The correct option is $(B)$.An aromatic amino acid is an amino acid that includes an aromatic ring in its side chain.$1$. Tyrosine contains a phenol group (a benzene ring with a hydroxyl group).$2$. Tryptophan contains an indole group (a fused benzene and pyrrole ring).Threonine contains a hydroxyl group,methionine contains a sulfur atom (thioether),and arginine contains a guanidino group. None of these are aromatic.Therefore,tyrosine and tryptophan are the amino acids that contain an aromatic group in their side chain.

Among the $\alpha$-amino acids - threonine,tyrosine,methionine,arginine and tryptophan,those which contain an aromatic group in their side chain are

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