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Multiple Choice
If all hydrogen bonds in a protein are disrupted, which level of protein structure will be preserved?
A
Quaternary structure
B
Tertiary structure
C
Secondary structure
D
Primary structure
Verified step by step guidance
1
Understand the levels of protein structure: Primary, Secondary, Tertiary, and Quaternary.
Recognize that the primary structure of a protein is the sequence of amino acids linked by peptide bonds.
Identify that secondary structures, such as alpha helices and beta sheets, are stabilized by hydrogen bonds.
Note that tertiary structure involves the overall 3D shape of a single protein molecule, stabilized by various interactions including hydrogen bonds.
Acknowledge that quaternary structure involves the arrangement of multiple protein subunits, also stabilized by hydrogen bonds and other interactions. Therefore, if hydrogen bonds are disrupted, only the primary structure, which relies on peptide bonds, will be preserved.