The most notable difference between PrPC (normal protein) and PrPSc (prion protein) is
A. PrPC causes a cell to undergo rapid apoptosis.
B. PrPC is a much longer polypeptide chain, compared to PrPSc.
C. PrPc is a functional glycolytic enzyme, whereas PrPSc is nonfunctional.
D. PrPc folds appropriately whereas PrPSc does not fold correctly.
Answer: D
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