EVERYDAY SCIENCE

Detailed explanation-1: -Glycolysis. Six-carbon glucose is converted into two pyruvates (three carbons each). ATP and NADH are made.

Detailed explanation-2: -In the mitochondria, the metabolism of sugars is completed, and the energy released is harnessed so efficiently that about 30 molecules of ATP are produced for each molecule of glucose oxidized. By contrast, only 2 molecules of ATP are produced per glucose molecule by glycolysis alone.

Detailed explanation-3: -Glycolysis produces only two net molecules of ATP per 1 molecule of glucose. However, in cells lacking mitochondria and/or adequate oxygen supply, glycolysis is the sole process by which such cells can produce ATP from glucose.

Detailed explanation-4: -There, glucose is broken down in a series of biochemical reactions releasing energy in the form of ATP. The ATP derived from these processes is used to fuel virtually every energy-requiring process in the body.

Detailed explanation-5: -Glucose and other food molecules are broken down by controlled stepwise oxidation to provide chemical energy in the form of ATP and NADH.