Which type of bond is primarily responsible for the secondary structure of

proteins?

A) Disulfide bonds

B) Hydrogen bonds

C) Ionic bonds

D) Peptide bonds

Click to reveal answer

Answer: B. Hydrogen bonds

Explanation: Hydrogen bonds are responsible for the secondary structure of

proteins, which includes alpha helices and beta sheets. These bonds form between

the carbonyl oxygen of one amino acid and the hydrogen attached to the nitrogen

of another.

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Day 119 MCAT Practice Question