Question

multiple-choice question which type of bond holds secondary structure together? hydrogen bond polar covalent bond ionic bond non - polar covalent bond rewatch skip

Explanation:

In protein secondary structure (like alpha - helices and beta - pleated sheets), hydrogen bonds form between the carbonyl oxygen and the amide hydrogen of the peptide backbone. Polar covalent bonds are within the peptide bonds (but not for holding secondary structure), ionic bonds are not the main force here, and non - polar covalent bonds are in the peptide bond's C - C or C - H etc. but not for secondary structure stabilization. So the bond holding secondary structure together is the hydrogen bond.

Answer:

A. Hydrogen bond