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

The correct answer is D.

Explanation:

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

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.  

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.