Question

Cancer cells can easily be damaged by radiation than normal cells because they are
A. Starved on mutation
B. Undergoing rapid division
C. Different in structure
D. Ion-dividing

Answer 1

Radiation therapy also called radiotherapy is a cancer treatment that uses high doses of radiation to kill cancer cells.

Complete answer:
Radiation therapy is used for the treatment of cancer that uses a high dose of radiation to kill cancer cells and shrink tumors. At low doses radiation is used as an x-ray to see inside the body and take pictures such as x-rays of teeth or broken bones. The radiation therapy is given by external or internal beams. External beam involves a machine outside the body in or near the cancer. Sometimes people get both forms of radiation therapy. Many people with cancer need treatment with radiation therapy. Radiation kills or slows the growth of cancer cells. Radiation prevents cancer cells from returning to the rapid division. When cure is not possible, radiation may be used to treat pain and other problems caused by cancer tumors. It also can prevent problems that may be caused by growing tumors, such as blindness or loss of bowel and bladder control.
The normal cells grow and divide to form new cells. But cancer cells grow and divide faster than most normal cells. Through radiation, small breaks in the DNA inside the cancer cells are made. Which breaks their rapid division and spread, leading them to die.

Therefore, the correct answer is option (B) Undergoing rapid division.

Note: For some types of cancer, radiation and chemotherapy or other types of anti-cancer drugs might be used together. Some types of cancers are still not curable. Survival rate in cancer depends upon how soon it is detected.