# Which of the following is a neutral amino acid ?

$(a)\;glycine\qquad(b)\;histidine\qquad(c)\;aspartic \;acid\qquad(d)\;lyrine$

Explanation :
Neutral amino acids contain equal number of amino and carboxyl groups .
Example : glycine
Histidine & lyrine are basic and aspartic acid is acidic amino acids .