Practice question
Question
The most common isotope of carbon found in nature is:
Explanation
12C is the correct answer as it accurately identifies the biological location, composition, or distribution described in this question. In Atoms and Molecules, the spatial organization and localization of molecules are critical to their function. 12C is specifically associated with the structure or compartment mentioned because of its unique biochemical properties and physiological role. The other options (13C, 14C, and 15C) are primarily associated with different cellular compartments, tissues, or structural contexts.