BIOL 1001 Chapter : Ch 8pt 2
Document Summary
Aerobic pathway occurs only if oxygen is present. Cellular respiration is a 3 stage process matrix reactions. The krebs cycle (citric acid cycle: electron transport chain, chemiosmosis. _2 pyruvate (from 1 glucose) enter the mitochondria matrix. The krebs cycle is a cycle because it starts and ends with the same molecule: oxaloacetate (remember the calvin cycle?) E8. 2 also known as the citric acid cycle citrate is the first product produced. A series of 7 reactions each catalyzed by a different enzyme oxaloacetate is regenerate- with each turn of the wheel. Cellular respiration: 4 total atp from 1 glucose molecule. So far, the cell has only gained 4 atp from one glucose molecule-- ** 2 net atp from glycolysis- and 2 atp from the krebs cycle. But the cell has also gained lots of charged electron carriers- Per 1 glucose molecule 10 nadh and 2 fadh2.
