Phosphorous-32 Is a Beta Emitter with a Half-Life of 14

question 103

Multiple Choice

Phosphorous-32 is a beta emitter with a half-life of 14.3 days.After 42 days, a 100-mg sample will have decayed to 25 mg.Which statement BEST describes where the rest of the ³²P went?

• A) It disappeared.
• B) It reacted with air.
• C) It turned into sulfur and a beta particle.
• D) It turned into silicon and a beta particle.
• E) It decomposed into beta particles.

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Definitions:

Polyp

A tumor with a pedicle, especially on mucous membranes, such as in the nose, rectum, or intestines.

Mucosal Membrane

Moist tissue layer lining body cavities or passages that are open to the exterior, such as the mouth, nose, and intestines.

Upper Epithelial Cells

The cells that are located on the surface layer of an epithelium, acting as a barrier against physical and microbial threats.

Endocrine Gland

A gland in the body that releases hormones directly into the bloodstream to regulate various processes such as growth, metabolism, and mood.