54.  The third stage of cellular respiration called ________…

54.  The third stage of cellular respiration called ________________occurs in the mitochondrial matrix.  During this stage, the  2 acetyl-CoA made at the end of the second stage is combined with ___________ to create ___________.  During this stage,  4 CO2 are released from the cell and the carbon-containing molecule eventually released recreates OAA.