Question

Cancer cells are more easily destroyed by radiation as compared to normal cells. How ? Explain.

Answer 1

Radiation therapy targets the DNA inside the cell by making them unable to divide and reproduce. Cancer cells perform unlimited cell division. Now, when their dividing ability is targeted, naturally they respond more. They stop dividing. Thus, the tumour shrinks. However, the adjoining normal cells also get affected by radiation but they can repair themselves more effectively.