All of the Following Are TRUE of Radioactive Isotopes,EXCEPT

question 40

Multiple Choice

All of the following are TRUE of radioactive isotopes,EXCEPT

• A) they are unstable.
• B) they transform into other elements.
• C) they release high-energy electrons.
• D) they are used in radioactive dating.
• E) the amount of time for a radioactive isotope to decay to half its original quantity is called its half-life.

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Definitions:

Thyroid Gland

A gland in the neck that produces hormones regulating heart rate, body temperature, and metabolism.

Hormones

Chemical messengers produced by glands in the body that regulate physiological activities by signaling to organs and tissues.

Autocrine

a mode of hormone action where a hormone acts on the same cell that produced it.

Hypothyroidism

A condition where the thyroid gland is underactive, resulting in a deficiency in thyroid hormones affecting metabolism.