Question

The alpha-helix and beta-pleated sheet structures of a protein are associated with its:

• A. quaternary structure
• B. primary structure
• C. secondary structure
• D. tertiary structure

Hint:

The secondary structure of proteins includes alpha-helices and beta-pleated sheets, which are stabilized by hydrogen bonds between backbone atoms.

Answer 1

The Correct Option is C

The alpha-helix and beta-pleated sheet are types of secondary structures in proteins. These structures arise from the folding of the polypeptide chain due to hydrogen bonding between the backbone atoms. The primary structure is the linear sequence of amino acids, while the tertiary structure refers to the overall three-dimensional shape of the protein. The quaternary structure refers to the arrangement of multiple polypeptide chains. Thus, the correct answer is secondary structure.