An animal cell The citric acid cycle In the mitochondrlal matrix Inner mitochondrial For each glucose processed men membrane by glycolysis, the citric intermembrane acid cycle"turns" twice. Acetyl CoA 3( NADH)+3H+ FADH Citric acid cycle 2c0 3 NAD ATP(ADP+ 乙酰辅酶A进入 HgO CoA-SH CHa- +0=C-cO0 citrate →HOC-C0O S-CoA CHo-coo synthase Acetyl-COA Oxaloacetate柠檬酸合成 Citrate △G 32.2 k/mol 乙酰辅酶A 草酰乙酸 柠檬酸9 柠檬酸 乙酰辅酶A进入 乙酰辅酶A 草酰乙酸 柠檬酸合成酶