Cesium-137 Has a Half-Life of 30 Years

question 11

Multiple Choice

Cesium-137 has a half-life of 30 years. If a 2.0 g sample of cesium-137 decays over 120 years, how much would remain?

• A)0.25 g
• B)1.4 g
• C)0.5 g
• D)0.125 g

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Definitions:

Prolactin

Anterior pituitary hormone that stimulates milk production by mammary glands.

Milk Production

The biological process in the mammary glands of female mammals to produce milk to feed their young.

Hormone

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

Morphogenesis

The biological process that causes an organism to develop its shape, a fundamental aspect of developmental biology.