Question

Which statements describe the use of gamma rays to treat cancer? Check all that apply.

Gamma rays have low energy and a source must be placed in the body.
Gamma rays are absorbed by only the cancer cells.
High-energy gamma rays are directed at a tumor from outside of the body.
Gamma rays kill cancer cells in a tumor.
Gamma rays are applied to a large area of the body.

Answer 1

Gamma rays are used in cancer treatment to kill cancer cells by damaging their DNA.

Step-by-step explanation:

The use of gamma rays in cancer treatment involves the application of high-energy gamma rays to kill cancer cells. Gamma rays have characteristics similar to X-rays and are more penetrating and damaging to living tissue. In radiation therapy, high-energy radiation is used to damage the DNA of cancer cells, preventing them from dividing or killing them. This therapy can be delivered externally using a machine outside the body or internally using a radioactive substance. However, gamma rays are not absorbed only by cancer cells and can also damage healthy cells.

Answer 2

3, 4

Step-by-step explanation:

High energy gamma rays are directed at a tumor from outside the body & gamma rays kill cancer cells in a tumor on edge.