GENERAL KNOWLEDGE

Detailed explanation-1: -Cancer cells are easily damaged by radiation as they are undergoing rapid division. Moreover, since cancer cells are less organized than healthy cells, it is harder for them to repair the damage done by radiation.

Detailed explanation-2: -Cancers, however, occur due to an alteration of a normal biological process-cell division. Cells that progress through the cell cycle unchecked may eventually form malignant tumors, where masses of cells grow and divide uncontrollably, then develop the ability to spread and migrate throughout the body.

Detailed explanation-3: -Radiation therapy is a type of cancer treatment that uses beams of intense energy to kill cancer cells. Radiation therapy most often uses X-rays, but protons or other types of energy also can be used. The term “radiation therapy” most often refers to external beam radiation therapy.