AP Biologymediummcq1 pt
What happens when a protein denatures?
A.It unfolds and loses function, but its sequence stays intact
B.Its peptide bonds break
C.It becomes a lipid
D.It always refolds perfectly on cooling
Explanation
Core Concept
Denaturation disrupts the interactions that maintain a protein's higher-order structure while usually leaving the peptide-bond sequence intact. Loss of the native conformation often reduces function. Some proteins can refold spontaneously when normal conditions return, whereas others aggregate, refold inefficiently, or require chaperones.
Correct Answer
AIt unfolds and loses function, but its sequence stays intact
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