AP BIOLOGY

Detailed explanation-1: -Apoptosis is also referred to as programmed cell death. It is an essential process for removing cells that are stressed, damaged, or worn out. It is estimated that over 50 billions cells undergo apoptosis each day in adults. Apoptosis is also carefully regulated through complex mechanisms.

Detailed explanation-2: -In multicellular organisms, cells that are no longer needed or are a threat to the organism are destroyed by a tightly regulated cell suicide process known as programmed cell death, or apoptosis.

Detailed explanation-3: -Apoptosis occurs normally during development and aging and as a homeostatic mechanism to maintain cell populations in tissues. Apoptosis also occurs as a defense mechanism such as in immune reactions or when cells are damaged by disease or noxious agents (Norbury and Hickson, 2001).

Detailed explanation-4: -One form of programmed cell death (PCD) is apoptosis. Defective apoptosis is an indispensable causative factor in the development of cancer that allows cancer cells to survive longer and favors the accumulation of oncogenic mutations.

Detailed explanation-5: -Like cell division, cell death is also tightly controlled. Cells frequently die by a process termed programmed cell death or apoptosis. Apoptosis is a natural process that occurs throughout the lives of almost all animals and plants.