Amino acids are small molecules that are the building blocks of proteins. Proteins serve as structural support inside the cell and they perform many vital chemical reactions. Each protein is a molecule made up of different combinations of 20 types of smaller, simpler amino acids.The pathways of amino acid synthesis comprise a significant fraction of a bacterium's metabolic activity during its growth in a minimal medium. Two amino acids, glutamine and glutamate, are the immediate products of ammonia assimilation and essential nitrogen donors for the synthesis of other intermediates.

2. Amino acids are molecules that combine to
form proteins. Amino acids and proteins are
the building blocks of life.
 Amino acids are classified into two groups:
 Essential amino acids
 Nonessential amino acids

3. ESSENTIALAMINO ACIDS
 Essential amino acids cannot be made by the body. As
a result, they must come from food.
 The 9 essential amino acids are: histidine, isoleucine,
leucine, lysine, methionine, phenylalanine,
threonine, tryptophan, and valine.
NONESSENTIALAMINO ACIDS
 Nonessential means that our bodies can produce the
amino acid, even if we do not get it from the food we
eat. Nonessential amino acids include: alanine,
arginine, asparagine, aspartic acid, cysteine, glutamic
acid, glutamine, glycine, proline, serine, and tyrosine.