<prompt> Which is an acidic amino acid?AsparagineGlutamineAspartateGlycine  <response>: Ans. is c i.e., Aspartate Neutral amino acids: Alanine, asparagine, cysteine, glycine, glutamine, isoleucine, leucine, methionine, proline, phenylalanine, serine, threonine, tyrosine, tryptophan, valine. Acidic amino acids negatively charged or anion : Aspartic acid aspartate, glutamic acid glutamate. Basic amino acids positively charged or cation : Arginine, histidine, lysine. 