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Question
Which of the following has an aromatic ring in its structure?
Which of the following has an aromatic ring in its structure?
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Solution
The correct option is A Tryptophan
Amino acids are substituted methanes. They contain a -NH2 (amide), -COOH (carboxyl), H and an R (aliphatic or aromatic hydrocarbon chain) group in their structure. R can be substituted to get different amino acids.
When R= H, it forms the simplest amino acid glycine. Glycine is optically inactive due to the presence of 2H groups.
When R= -CH3, it is alanine.
Tryptophan has an aromatic ring in its structure.
Cysteine and methionine are sulphur containing amino acids.
Cysteine
Methionine
Amino acids are substituted methanes. They contain a -NH2 (amide), -COOH (carboxyl), H and an R (aliphatic or aromatic hydrocarbon chain) group in their structure. R can be substituted to get different amino acids.
When R= H, it forms the simplest amino acid glycine. Glycine is optically inactive due to the presence of 2H groups.
When R= -CH3, it is alanine.
Tryptophan has an aromatic ring in its structure.
Cysteine and methionine are sulphur containing amino acids.
Cysteine
MethionineSuggest Corrections
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