To Determine the Age of Fairly Recent Fossils and Organic

question 30

Multiple Choice

To determine the age of fairly recent fossils and organic artifacts,it is possible to analyze the amounts of the isotopes ¹⁴C and ¹⁴N,because over time the ¹⁴C-which originated in the atmosphere-breaks down into ¹⁴N through a process known as beta decay.What net change occurred for this to happen?

• A)The ¹⁴C lost an electron.
• B)The ¹⁴C gained an electron.
• C)The ¹⁴C lost a proton.
• D)The ¹⁴C gained a proton.
• E)The ¹⁴C gained a neutron.

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Definitions:

Leukocyte

A white blood cell, part of the immune system, involved in defending the body against both infectious disease and foreign materials.

Leuk/o

Refers to the color white, often used in medical terms related to white blood cells.

Lymphadenitis

Inflammation of the lymph nodes, often a response to infection.

Aden

A prefix used in medical terminology to denote related to glands.