The Alpha-Helix and Beta Sheet are Examples of ________ Protein

Question

The alpha-helix and beta sheet are examples of ________ protein structure.
A) primary
B) secondary
C) tertiary
D) quaternary
E) pentanary

Accepted Answer

The alpha-helix and beta sheet are examples of secondary protein structure, which refers to the regular repeating patterns of hydrogen bonding between the backbone atoms of amino acids. Primary structure refers to the linear sequence of amino acids, tertiary structure refers to the overall 3-dimensional shape of a protein, quaternary structure refers to the arrangement of multiple protein subunits, and pentanary structure is not a commonly recognized level of protein structure.