In the form of proteins, amino acids comprise the second-largest component (water is the largest) of human muscles, cells and other tissues. Outside proteins, amino acids perform critical roles in processes such as neurotransmitter transport and biosynthesis.n biochemistry, amino acids having both the amine and the carboxylic acid groups attached to the first (alpha-) carbon atom have particular importance.
Ad lib redirects here. For other uses, see Ad lib (disambiguation). Ad libitum (/Ã¦dËlÉªbáµ»tÉm/) is Latin for at one's pleasure; it is often shortened to ad lib (as an adjective or adverb) or ad-lib (as a verb or noun).
On October 18th, 2008, Urban Dictionary user KayBee(LD) submitted an entry for the phrase âturnt up,â defining it as âgetting drunkâ or âgetting loose.â On November 26th, 2009, rapper Lupe Fiasco released the track âTurnt Upâ on his mixtape Enemy of the State: A Love Story (shown below, left).