No way.<p>The main function of the mitochondria is to transform ADP to ATP. A good analogy is that ADP is an uncharged battery and ATP is a charged battery, so the mitochondria are the rechargers.<p>The ATP can be used in other parts of the cell to make something useful, like moving or building a molecule. To use it, the ATP is split and it produces ADP. So they are like a battery.<p>The function of mitochondria is totally unrelated to the function of CPU and brain.