In TCA cycle, CO2 is released from:: (A) Thiokinase, (B) Isocitrate dehydrogenase, (C) Citrate dehydrogenase, (D) Alpha ketoglutrate
Answer is B. B i.e. Isocitrate dehydrogenase 2 molecules of carbon dioxide are released in TCA cycle. One before and one after a - ketoglatarate. Enzymes used are - isocitrate dehydrogenase and a ketoglutarate dehydrogenaseQ respectively.