either of the two saclike respiratory organs in the thorax of humans and the higher vertebrates. 2. an analogous organ in certain invertebrates, as arachnids or terrestrial gastropods. Idioms. 3. at the top of one's lungs, as loudly as possible; with full voice: The baby cried at the top of his lungs.
Mitochondria are the energy factories of the cells. The energy currency for the work that animals must do is the energy-rich molecule adenosine triphosphate (ATP). The ATP is produced in the mitochondria using energy stored in food. Just as the chloroplasts in plants act as sugar factories for the supply of ordered molecules to the plant, the mitochondria in animals and plants act to produce the ordered ATP molecules as the energy supply for the processes of life.
A total of 38 ATP is produced but two is used up during the process so the net gain is 36. Of the 36, 2 comes directly from Glycolysis, and another 2 comes directly from the Kâ¦rebs Cycles. The rest 32 comes from NADH and FADH2 that are produced by cellular respiration. These NADH and FADH2s dispose their hydrogen into the electon transport chain. The hydrogens drive the ATP synthase and each of them turns one ADP into ATP, resulting in another 32 ATPs.