Why is apoptosis potentially threatening to the healthy "neighbors" of a dying cell?
A. Released cellular energy would interfere with the neighbors' energy budget.
B. Neighboring cells would activate immunological responses.
C. Cell death would usually spread from one cell to the next via paracrine signals.
D. Lysosomal enzymes exiting the dying cell would damage surrounding cells.
E. Bits of membrane from the dying cell could merge with neighbors and bring in foreign receptors.
Answer: D