The liver combines fatty acids and amino acids into lipoproteins, which can be easily used by the various cells of the body.
A relation doesn't exist.
Any relation exist.
Protein synthesis is the process of putting amino acids together to form a protein. So it's not a matter of which amino acids are vital. If you are asking which amino acids are vital in the synthesis of a specific protein, that would totally depend on which protein you are making.
A relation doesn't exist.
There are 22 "standard" amino acids, although many others exist
A chemical laboratory cannot exist now without apparatuses.
I suppose that a relation doesn't exist.
A relation between the boiling point and density doesn't exist.
I suppose that a relation doesn't exist.
20
No one knows, however there are several scientific theories. Personally, I believe it was by chance because neither L or D amino acids are thermodynamically, sterically, chemically or physically favored.
There are 20 naturally occurring amino acids found in living things.