Although High Doses of Radiation Are Harmful to Cells,how Can

question 15

Multiple Choice

Although high doses of radiation are harmful to cells,how can low levels of radioactive isotopes be used medicinally?

• A)as tracers in imaging organs using Xrays and PET Scans
• B)to reduce obesity and diabetes in teenagers
• C)to create drugs that work faster than normal
• D)to destroy aging and unwanted cells
• E)to prevent ultraviolet damage from the sun

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Definitions:

Toxic Chemical

A substance that can cause harm to organisms through chemical reactions or other actions on the molecular scale, often dangerous to human health and the environment.

Exposure Levels

The degrees or amount of exposure to a particular substance, condition, or agent that an organism or ecological system experiences.

Toxins

Harmful substances produced by living organisms, including plants, animals, fungi, and bacteria, that can cause disease or damage when absorbed or ingested by others.

Uncertainty

The state of having limited knowledge where it is impossible to exactly describe the existing state, a future outcome, or more than one possible outcome.