Which statement concerning the twenty different $\alpha$-amino acids widely found in nature is true? A) Each $\alpha$-amino acid has a different number of carbon atoms. B) Each $\alpha$-amino acid has one amino (-NH₂)group. C) Each $\alpha$-amino acid has one carboxylic acid (-COOH)group. D) These $\alpha$-amino acids differ in the R groups attached to the $\alpha$-carbon. E) None of these $\alpha$-amino acids are aromatic compounds.

Question

Quizplus · Accepted Answer

The statement that is true is that these F1F1F1S1F1F1F10-amino acids differ in the R groups attached to the F1F1F1S1F1F1F10-carbon. The other options are not accurate: A) This statement is incorrect, as all amino acids have the same basic backbone of carbons. B) This statement is only partially correct, as all amino acids have one amino group, but they also have a carboxylic acid group. C) This statement is only partially correct, as all amino acids have one carboxylic acid group, but they also have an amino group. E) This statement is incorrect, as some of these amino acids, such as phenylalanine, are aromatic compounds.

Which Statement Concerning the Twenty Different α\alphaα -Amino Acids Widely Found in Nature Is True? A) Each

Which Statement Concerning the Twenty Different $\alpha$ -Amino Acids Widely Found in Nature Is True?
A) Each