A Radioisotope Decays, Producing an Alpha Particle and Th-234

question 57

Multiple Choice

A radioisotope decays, producing an alpha particle and Th-234. The original radioisotope must have been an atom of ________.

• A) Pa
• B) Bi
• C) U
• D) Ra
• E) Rb

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Definitions:

Immune System Efficiency

The effectiveness with which the immune system identifies, responds to, and eliminates pathogens and foreign substances.

Organ Transplants

Medical procedures in which an organ is removed from one body and placed in the body of a recipient, to replace a damaged or missing organ.

Cancer

A group of diseases characterized by the uncontrolled growth and spread of abnormal cells.

Specific Immune Responses

Immune reactions that are tailored to recognize and combat specific pathogens or biological invaders.