What is the most probable fate of a cell that cannot repair after irradiation?

What is the most probable fate of a cell that cannot repair after irradiation?

• A. Cell mutation
• B. Cell death
• C. Complete cellular repair
• D. Carcinogenesis

Answer: (B)

When radiation causes DNA damage that cannot be repaired, the cell’s damage-control systems trigger its own death to prevent passing on severely damaged genes. This programmed cell death (apoptosis) or, in some cases, harsh necrosis, is the most likely outcome because the genetic material cannot be reliably restored for survival or division. If the cell were to survive with unrepaired damage, mutations could accumulate, potentially leading to carcinogenesis, but that is a longer-term consequence and not the immediate fate of an irreparably damaged cell. Complete cellular repair is not possible in this scenario, so cell death is the expected result.

When radiation causes DNA damage that cannot be repaired, the cell’s damage-control systems trigger its own death to prevent passing on severely damaged genes. This programmed cell death (apoptosis) or, in some cases, harsh necrosis, is the most likely outcome because the genetic material cannot be reliably restored for survival or division. If the cell were to survive with unrepaired damage, mutations could accumulate, potentially leading to carcinogenesis, but that is a longer-term consequence and not the immediate fate of an irreparably damaged cell. Complete cellular repair is not possible in this scenario, so cell death is the expected result.