Solution: 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.

Problem

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.

Solution

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. 

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