Each of the following describes the preparatory reaction except _____.
A. It connects glycolysis to the Krebs cycle.
B. Carbon dioxide is given off.
C. Pyruvate is converted to a two-carbon acetyl group.
D. NAD+ is converted to NADH.
E. The reaction occurs once per glucose molecule.
After glycolysis, the pyruvate molecule can be oxidized into different proccesses: It can undergo anaerobic oxidation through fermentation, or it can be prepared for entry to the Krebs cycle.