Question

When normal cells are subjected to treatments that damage DNA, like ionizing radiation or DNA altering drugs, what would happen?

1) They are severely and permanently damaged
2) Their progress through the cell cycle stops while the damage is repaired
3) Their progress through the cell cycle continues and the damage is not repaired
4) The nucleus is thoroughly destroyed

Answer 1

When normal cells are damaged, their progress through the cell cycle stops while the damage is repaired. If the DNA damage is severe, the cell may undergo dormancy or cell sui cide, or unregulated cell division leading to a tumor. The correct answer is 2.

Step-by-step explanation:

When normal cells are subjected to treatments that damage DNA, such as ionizing radiation or DNA altering drugs, their progress through the cell cycle stops while the damage is repaired. Repairing DNA damage is a crucial process that ensures the integrity of the genetic code and the normal functioning of the cell. If the DNA damage is severe and cannot be repaired, the cell may enter an irreversible state of dormancy or undergo cell sui cide. In some cases, unregulated cell division can occur, leading to the formation of a tumor. The correct answer is 2.