Which of the following statements are correct regarding amino acids? A. The R group in the amino acid alanine is a methyl group. B. Tyrosine, phenylalanine and tryptophan are aromatic amino acids. C. Glutamic acid is an example of a basic amino acid. D. The R group in glycine is a hydroxymethyl group. Choose the correct answer from the options given below:

Step-by-step solution

Statement A is correct. The R group in alanine is a methyl group ( -CH₃ ). Statement B is correct. Tyrosine, phenylalanine, and tryptophan contain aromatic rings in their side chains, making them aromatic amino acids. Statement C is incorrect. Glutamic acid contains an extra carboxyl group in its side chain, making it an acidic amino acid, not a basic one. Statement D is incorrect. The R group in glycine is a hydrogen atom ( -H ), making it the simplest amino acid. The amino acid with a hydroxymethyl group ( -CH₂OH