Question

• the monomer building blocks of proteins are called ______________.
• there are ____________ different amino acids.
• draw the basic structure that all amino acids share:

Explanation:

Proteins are polymers made of amino - acid monomers. There are 20 standard amino acids in proteins. The basic structure of an amino acid consists of an amino group (-NH₂), a carboxyl group (-COOH), a hydrogen atom (-H), and a variable R - group attached to a central carbon atom.

Answer:

• Amino acids
• 20
• An amino acid has a central carbon atom bonded to an amino group (-NH₂), a carboxyl group (-COOH), a hydrogen atom (-H), and a variable R - group. (It's not possible to actually draw in this text - based format, but this is the description of the structure)