Programmed cell death is called:
a. Necrosis
b. Apoptosis
c. Hemolysis
d. Phagocytosis
ANS: B
Apoptosis is programmed cell death, a normal physiologic process to remove damaged, abnormal, or unneeded cells. Necrosis is abnormal death because of trauma or damage. Hemolysis is cell death by rupture (which is abnormal). Phagocytosis is the primary mechanism for removal of senescent cells, but it also can remove damaged cells.
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