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

Question

Quizplus · Accepted Answer

The alpha-helix and pleated sheet are both examples of secondary structure in proteins, which refers to the local 3D arrangement of amino acid residues close to each other in the protein chain. The primary structure is the linear sequence of amino acids, while tertiary structure refers to the overall 3D folding of the protein and quaternary structure refers to the arrangement of multiple protein subunits in a larger protein complex. Pentanary structure is not a commonly used term in protein structure.

The Alpha-Helix and Pleated Sheet Are Examples of the ________