Very many.
There are 22 "standard" amino acids, although many others exist
Of course they are. They are many acids and bases
9
There are 22 amino acids that humans require for life. however, there are hundreds of different kinds of amino acids.
19 or 20
8
eight
There are 20 different kinds of monomers in proteins, called amino acids.
There are 20 naturally occurring amino acids found in living things.
20
2
there are 6 types of lava