atp synthase acetyl-coa adenosine diphosphate adenosine triphosphate aerobic organism anabolism anaerobic organism anaerobic respiration archaea bacteria biosynthesis carbohydrate metabolism carbon dioxide catabolism cell membrane cellular waste product citric acid cycle coenzyme crista cytoplasm electrochemical gradient electron acceptor electron transport chain ethanol ethanol fermentation eukaryote fatty acid metabolism glucose glycolysis human iron metabolism hydrogen inner membrane lactic acid lactic acid fermentation lithotroph locomotion metabolic network metabolic pathway metabolism metal methane mitochondrial matrix mitochondrion nicotinamide adenine dinucleotide organism oxidative phosphorylation oxidizing agent oxygen phosphate phosphorylation prokaryote protein metabolism proton pyruvate decarboxylation pyruvate dehydrogenase complex redox substrate-level phosphorylation sugar sulfur symporter tetrazolium chloride thermogenin triose