Answer :
During the Krebs cycle
Carbon dioxide and water are created as byproducts. In cellular respiration, glucose and oxygen react to form ATP. Water and carbon dioxide are released as byproducts. The three stages of aerobic cellular respiration are glycolysis (an anaerobic process), the Krebs cycle, and oxidative phosphorylation.
The correct answer will be option-transition reaction.
Explanation:
The aerobic respiration is a type of cellular respiration which helps in the formation of the energy molecules called ATP by the oxidation of the food material. The respiration produces carbon dioxide as a byproduct.
The aerobic respiration is a complex process which takes place in four stages: glycolysis, pyruvate decarboxylation, Krebs cycle and electron transport chain.
The pyruvate formed as a result of the glycolysis moves from the cytoplasm to the mitochondria where it is converted to the acetyl CoA producing NADH and carbon dioxide (CO₂) via transition reaction. Since two molecules of pyruvate undergo decarboxylation, this produces two molecules of the carbon dioxide.
Thus, the option-transition reaction is the correct answer.