Answer: The chemical reaction between oxygen and glucose that releases energy in cells is called cellular respiration. This process occurs in the mitochondria of cells and involves several steps, including glycolysis, the citric acid cycle, and the electron transport chain.
Glycolysis is the first step of cellular respiration, during which a molecule of glucose is broken down into two molecules of pyruvate, releasing a small amount of energy in the form of ATP (adenosine triphosphate). The citric acid cycle, also known as the Krebs cycle, is the second step of cellular respiration, during which pyruvate is further broken down and more ATP is produced.
The final step of cellular respiration is the electron transport chain, which occurs in the inner membrane of the mitochondria. During this step, electrons are transferred from molecules of NADH and FADH2 to oxygen, releasing a large amount of energy in the form of ATP. The oxygen used in this process is the oxygen we breathe in, and the glucose comes from the food we eat.
Overall, cellular respiration is a series of chemical reactions that converts glucose and oxygen into energy, releasing carbon dioxide and water as byproducts.
Step-by-step explanation: