This question is a bit backwards! It's like asking "What cars are found in wheels?"

Here's the breakdown:

* Amino acids are the building blocks of proteins. Think of them like individual LEGO bricks.

* Proteins are large, complex molecules made up of chains of amino acids. Think of them like the structures you build with LEGO bricks.

So, proteins are made up of amino acids, not the other way around.

There are 20 different common amino acids that are used to create proteins. Each amino acid has a different chemical structure, giving the protein its unique properties and function.