What is fate of pyruvic acid when carbon dioxide is absent??

1.	What is fate of pyruvic acid when carbon dioxide is absent??
Answer» Pyruvic acid\xa0is first altered in the transition reaction by removal of a\xa0carbon\xa0and two oxygens (which form\xa0carbon dioxide). When the\xa0carbon dioxide\xa0is removed, energy is given off, and NAD+ is converted into the higher energy form NADH. Coenzyme A attaches to the remaining 2-C (acetyl) unit, forming acetyl Co-A.\xa0Pyruvic acid\xa0supplies energy to living cells through the citric\xa0acid\xa0cycle (also known as the Krebs cycle)\xa0when oxygen\xa0is present (aerobic respiration);\xa0when oxygen\xa0is lacking,\xa0it\xa0ferments to produce lactic\xa0acid.\xa0Pyruvate\xa0is an important chemical compound in biochemistry.

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