α-Helix and β-strand are components of ____ structure
A) primary
B) secondary
C) tertiary
D) quaternary
E) all are true

Question

Quizplus · Accepted Answer

α-helix and β-strand are both examples of secondary structure, which refers to the local spatial arrangement of the polypeptide chain. Primary structure is the linear sequence of amino acids, tertiary structure refers to the three-dimensional folding of the entire polypeptide chain, and quaternary structure is the arrangement of multiple polypeptide chains in a protein complex. Therefore, options A, C, and D are incorrect.

α-Helix and β-Strand Are Components of ____ Structure