A protein is made up of an amino acid that is connected by peptide bonds to form a string. The order and amount of amino acids in each form of protein vary.
A protein is made up of a sequence of amino acids that's also connected by peptide bonds to form a string. The primary distinction between an amino acid and a protein is that an amino acid is a protein's building block, but a protein serves as both a functional and structural component for the body. The R groups on the side chains of amino acids are what separate them from one another. A polypeptide core with connected side chains makes up a protein. It is the pattern of the chemically distinct side chains since each kind of protein varies in the quantity of amino acids and amino acid sequence it contains.
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