Question

a sequence of amino acids, or a polypeptide, grows from the n - terminus to the c - terminus. this polypeptide chain represents the primary structure of a protein. the linear sequence of amino acids within a protein is considered the ... structure of the protein.
a) quarternary
b) secondary
c) primary
d) tertiary

Explanation:

The primary structure of a protein is defined by the linear sequence of amino - acids. Secondary structure involves local folding like alpha - helices and beta - sheets. Tertiary structure is the 3 - D shape of a single polypeptide chain. Quaternary structure is the arrangement of multiple polypeptide chains.

Answer:

c) Primary