The pattern in which the backbone folds, such as an alpha-helix or beta-pleated sheet, is the __________ structure of a protein.

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



Answer :

Final answer:

Secondary structure of proteins includes the alpha-helix and beta-pleated sheet.


Explanation:

Alpha-helix and beta-pleated sheet are examples of secondary structure in proteins, which is represented by option B in the question. Secondary structure is formed by interactions between the peptide backbone amino and carbonyl groups, leading to structures like the alpha-helix and beta-pleated sheet.


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