Why Is It Necessary to Have a Standard for the Interpretation

question 10

Multiple Choice

Why is it necessary to have a standard for the interpretation of stable isotope ratios?

• A) A standard is necessary to calculate how rapidly the stable isotopes undergo radioactive decay.
• B) A standard is necessary to determine the stable isotope ratio in the absence of biological activity.
• C) A standard is necessary because samples are only presented in comparison with other samples of the same age.
• D) A standard is necessary to determine the age of the sample.

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Definitions:

Nuclei

The plural of nucleus, referring to the membrane-bound organelles found in eukaryotic cells that contain the genetic material (DNA) and control the cell's growth and reproduction.

Medulla Oblongata

A section of the brainstem responsible for regulating vital bodily functions such as breathing, heart rate, and blood pressure.

Blood Vessel

Vessels within the body that facilitate the flow of blood, encompassing arteries, veins, and capillaries.

Neural Plate

An embryonic structure that develops into the nervous system, including the brain and spinal cord, through a process known as neurulation.