Answer: The correct answer is B .Glucose is broken down.
Cellular respiration is a process of oxidation food ( like glucose) into CO₂ ( carbon dioxide) and H₂O (water) with the formation of large amount of energy in the form of ATP ( adenosine triphosphate), which is utilized in driving essential processes of the cell.
It is divided into three phases that is 1) Glycolysis 2) Kreb cycle ( citric acid cycle), and 3) Electron transport chain.
The first phase is glycolysis in which glucose is broken down and converted into two molecules of pyruvate with the formation of net 2 ATP and 2 NADH.
Therefore, option B) is the right answer.
