Now, we also sometimes call it the crop cycle or the TCA cycle, where TCA stands for tricarboxylic acid because as we'll see in just a moment, tricarboxylic acid TCA is actually an intermediate of the citric acid cycle. Now, every time one cycle of the citric acid cycle actually takes place, what happens is two carbon dioxide molecules are produced, a GTP molecule is produced and eight electrons are collected via the oxidation reduction reactions. Now, six of these electrons are picked up by three of these NAD plus molecules. So we have three NAD plus pick up three of these hydride ions to form three nadhs. But two of these electrons are picked up by another important carrier found in our body known as Flavin adenine dinucleotide. So we have Fad that picks up two of these h ions that each contain one electron each.