EVERYDAY SCIENCE

Detailed explanation-1: -For each molecule of glucose, two molecules of ATP are hydrolyzed to provide energy to drive the early steps, but four molecules of ATP are produced in the later steps. At the end of glycolysis, there is consequently a net gain of two molecules of ATP for each glucose molecule broken down.

Detailed explanation-2: -Cellular respiration is a physical process by which mitochondria breaks down glucose in the presence of oxygen.

Detailed explanation-3: -During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).