Amino acids are organic compounds that are classified as either essential or nonessential. Essential amino acids cannot be synthesized by the human body and so must be obtained from various kinds of food sources, whereas nonessential amino acids can be synthesized by the human body.

Amino acids are classified as basic, acidic, aromatic, aliphatic, or sulfur-containing, based on the composition, and properties of their R groups.

How can you memorize all these 20 amino acids, easily and quickly?