What does the term apoptosis refer to?

What does the term apoptosis refer to?

• A. Necrosis
• B. Autophagy
• C. Programmed cell death or cell 'suicide'
• D. Cell division

Answer: (C)

Apoptosis is programmed cell death, a tightly regulated, energy-dependent process that lets the body remove cells in a controlled way without inciting inflammation. It’s essential during development and for maintaining tissue balance by getting rid of cells that are damaged, unnecessary, or potentially harmful. The process uses caspases and can be triggered by internal (mitochondrial) or external (death receptor) signals, leading to orderly changes such as cell shrinkage, chromatin condensation, DNA fragmentation, membrane blebbing, and the formation of apoptotic bodies that are quietly cleared by phagocytes. This is distinct from necrosis, which is uncontrolled cell death from injury and often causes inflammation, and from autophagy, a lysosome-driven process that can help cells survive during stress or, in some contexts, contribute to cell death. It’s also not about cell division, which is the process of cell replication.

Apoptosis is programmed cell death, a tightly regulated, energy-dependent process that lets the body remove cells in a controlled way without inciting inflammation. It’s essential during development and for maintaining tissue balance by getting rid of cells that are damaged, unnecessary, or potentially harmful. The process uses caspases and can be triggered by internal (mitochondrial) or external (death receptor) signals, leading to orderly changes such as cell shrinkage, chromatin condensation, DNA fragmentation, membrane blebbing, and the formation of apoptotic bodies that are quietly cleared by phagocytes. This is distinct from necrosis, which is uncontrolled cell death from injury and often causes inflammation, and from autophagy, a lysosome-driven process that can help cells survive during stress or, in some contexts, contribute to cell death. It’s also not about cell division, which is the process of cell replication.