Question

Which statement is NOT correct about the classification of amino acids?

a. tryptophan and phenylalanine are aromatic amino acids

b. alanine and valine are neutral, nonpolar amino acids

c. alanine and isoleucine are aliphatic amino acids

d. aspartic acid and asparagine are acidic amino acids

e. lysine and arginine are basic amino acids

Answer 1

Answer:

The correct answer is D.

Explanation:

Amino acids can be classified depending on the side chain structure in

1. acidic
2. basic
3. neutral
4. aliphatic
5. aromatic
6. sulfur containing amino acids.  

Aspargine is a neutral amino acid that has a key role in glycoproteins biosynthesis. Aspargine helps the body to resist fatigue and contributes to a smooth functioning of the liver.