Iodine-131 Has a Half-Life of 8 Days

question 84

Multiple Choice

Iodine-131 has a half-life of 8 days.How many half-lives have passed after 24 days?

• A) 1 half-life
• B) 2 half-lives
• C) 3 half-lives
• D) 4 half-lives
• E) 5 half-lives

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Definitions:

Pleural Membrane

A thin, double-layered structure that envelops the lungs and lines the chest cavity to facilitate lung movement during breathing.

Ureters

Tubes that carry urine from the kidneys to the bladder.

Major Calyx

A structure in the kidney that collects urine from the minor calyces before it moves to the renal pelvis and ureter.

Suspensory Ligament

A fibrous tissue that connects the lens of the eye to the ciliary body, adjusting the lens shape for focusing.