Which Molecule is a Six-Carbon Compound

Question

Which molecule is a six-carbon compound?  
A) PEP
B) PGAL
C) Glucose-6-phosphate
D) Pyruvate
E) Phosphoglycerate (PGA)

Accepted Answer

Glucose-6-phosphate is a six-carbon compound as indicated by its name. PEP, PGAL, and Pyruvate are three-carbon compounds and Phosphoglycerate is a three-carbon or two-carbon compound depending on the specific isomer.