The Primary Structure of a Protein Is ________
A)the Sequence $\alpha$

The primary structure of a protein is ________

A) the sequence of amino acids in the protein.
B) the $\alpha$ -helix structure of the protein.
C) the $\beta$ -pleated sheet structure of the protein.
D) a list of the amino acids in the protein along with the number of times each occurs.
E) the arrangement of $\alpha$ -helices and $\beta$ -pleated sheets in the protein.