Compléter The Krebs CycleVersion en ligne The Krebs Cycle is the third stage of cellular respiration. Fill in the blanks to complete the steps! par Anna Kang 1 - is combined with , releasing CoA - SH , and enters the Krebs Cycle in the mitochondria . is produced and converted to its isomer , , which is oxidized by NAD + , releasing . NAD + is reduced to NADH . ? - is produced and oxidized by NAD + , releasing . NAD + is reduced to NADH . The 4 - carbon molecule is combined with CoA - SH . - is produced . - is released and used to attach 1 phosphate group to , forming . The terminal phosphate group is transferred to , forming . is produced and oxidized by , which is oxidized by . is produced and is added . is produced and oxidized by NAD + . NAD + is reduced to NADH . The end products of the 2 pyruvate molecules are NADH , FADH2 , and ATP .