What Percent of a Parent Radioactive Element Would Remain After

question 57

Multiple Choice

What percent of a parent radioactive element would remain after three half-lives of decay to its daughter isotope?

• A) 75
• B) 50
• C) 25
• D) 12.5
• E) 6.25

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Definitions:

Neutrophils

a type of white blood cell important in the immune system's response to infection.

RBCs

Short for red blood cells, these are the cells in the blood that carry oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.

Erythropoietin

A hormone produced by the kidneys that stimulates the production of red blood cells in the bone marrow, often used in medical treatments for anemia.

Hormone

A chemical substance produced by glands in the body that regulates and controls the activity of certain cells or organs.