BIOL 111 Lecture Notes - Lecture 13: Electron Transport Chain, Acetyl-Coa, Nicotinamide Adenine Dinucleotide
Document Summary
Citric acid cycle: takes place in the matrix of the mitochondria. Before the citric acid cycle can t begin-pyruvate must be converted to a acetyl coa. The remaining two carbon atoms attached to coa enter the citric acid cycle and are completely oxidized to carbon dioxide. Nadh and fadh2(electron carriers)- donate electrons to electron transport chain at the end of electron transport chain-> electrons are passed the oxygen forming water. Electrons transfer causes protein complexes to pump hydrogen ions from the mitochondria matrix into the inter membrane space. About 40% of energy and glucose molecule is harvested for use. Fermentation consists of glycolysis plus reactions that regenerate and nad+ Lactic fermentation- pyruvate is reduced directly to nadh to form lactate.