Assuming all three carbon atoms of glycerol are labeled as C14 radioisotopes and the radioisotope-labeled glycerol undergoes metabolism in animals. All of the following molecules in the animal may contain C14 radioisotopes EXCEPT: a. Pyruvate
b. Acetyl-CoA
c. Glutamine
d. Fattyacids
e. Oxaloacetate
f. All of the above molecules may contain C14 radioisotopes

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

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explanation: