from which food items can it be obtained from?
UNANSWERABLE
explain how one specific type of isomers (e.g. l-amino acid) can be functional in living organism UNANSWERABLE what is this acid about? Amino acids are organic compounds that contain amine (–NH) and carboxyl (–COOH) functional groups, along with a side chain (R group) specific to each amino acid. when was this acid first discovered? In 1806 - asparagine, the first amino acid to be discovered. who discovered it? Louis-Nicolas Vauquelin and Pierre Jean Robiquet where is the second person from? Rennes, France apart from the acid, has he discovered anything else? Codeine is one of his other discoveries can you name some of the titles he has received? Registered Pharmacist,  lecturer in chemistry at the École Polytechnique, member of the Académie des Sciences can the former acid be found in our food? Yes, some of them has to be obtained through our food.
wiki:1572182
Amino acid [SEP] In human nutrition
When taken up into the human body from the diet, the 20 standard amino acids either are used to synthesize proteins, other biomolecules, or are oxidized to urea and carbon dioxide as a source of energy. The oxidation pathway starts with the removal of the amino group by a transaminase; the amino group is then fed into the urea cycle. The other product of transamidation is a keto acid that enters the citric acid cycle. Glucogenic amino acids can also be converted into glucose, through gluconeogenesis. Of the 20 standard amino acids, nine (His, Ile, Leu, Lys, Met, Phe, Thr, Trp and Val) are called essential amino acids because the human body cannot synthesize them from other compounds at the level needed for normal growth, so they must be obtained from food.