The building blocks or proteins are:

Answer 1

The building blocks of proteins are amino acids. There are 20 different amino acids that combine in various sequences to form proteins. Each amino acid has a specific side chain, known as the R group, which determines its unique properties. The sequence and number of amino acids in a protein ultimately define its structure and function. Proteins play essential roles in virtually all biological processes, including catalyzing metabolic reactions, replicating DNA, responding to stimuli, and transporting molecules.