A substance is added to a protein sample that does not alter the composition or amino acid sequence of the protein itself, but changes its three-dimensional structure. Which of the following was altered by the substance?
A)Oxygen double bonds
B)Covalent bonds
C)Ionic bonds
D)Hydrogen bonds

Question

Quizplus · Accepted Answer

The substance likely disrupted hydrogen bonds, which contribute to the secondary and tertiary structure of proteins. This change in three-dimensional structure can have significant effects on the function of the protein. Oxygen double bonds (A) and covalent bonds (B) would alter the composition of the protein, while ionic bonds (C) contribute to the stability of the protein but are more easily disrupted than hydrogen bonds.

A Substance Is Added to a Protein Sample That Does