Amino acids are organic compounds containing an amino group and an acidic group as substituents on the same carbon i.e., the α-carbon. Hence, they are called α-amino acids. They are substituted methanes. There are four substituent groups occupying the four valency positions. These are hydrogen, carboxyl group, amino group and a variable group designated as R group. Based on the nature of R group there are many amino acids. However, those which occur in proteins are only of twenty
Adjacent to a frequently-asked paragraph in the same chapter.
Which one of the following statements is wrong? (NEET 2016 Phase 1)
Correct answer: B — Glycine is a sulphur containing amino acid.
Glycine is the simplest amino acid and does not contain sulphur. Sulphur-containing amino acids include cysteine and methionine.
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