Question

The pyruvic acid formed in glycolysis is oxidized to $C{O}_2$ and $H_{2}O$ in a cycle called

• A. Calvin cycle
• B. Hill reaction
• C. Krebs cycle
• D. Nitrogen cycle

Answer 1

Answer: (C)

Krebs cycle has been named after the Energy scientist Hans Krebs discovered it in $1948-1949$ and won Nobel Prize for his work in $1953$. The respiration starts with glucose. In aerobic and anaerobic respiration initial reactions are common as a result of which pyruvic acid is formed by breakdown of glucose. This process is called glycolysis. If $O_2$ is present there, a complete oxidation of pyruvic acid into $H_{2}O$ and $C{O}_2$ and a chemical reaction occurs called Tri-carboxylic Acid (TCA) cycle.