Kreb’s cycle is a long 8 step process that occurs twice for each molecule of glucose or sugar and it happens in the matrix of mitochondria. The eight steps of this cycle are explained down here - Step 1:- In the first of the cycle, the acetyl CoA molecule is condensed with the oxaloacetate (4C) in order to form the citrate (6C) molecule, this process occur in the presence of the “citrate synthase” enzyme.Step 2:- The citrate produced in the first step, will convert to its isomer, isocitrate. The enzyme aconitase oversees this reaction.Step 3:- this isomer, Isocitrate undergoes dehydrogenation and decarboxylation reactions in order to form 𝝰-ketoglutarate, with a carbon dioxide molecule. 𝝰-ketoglutarate will only have 5 carbon atoms left as the sixth carbon left in CO2.Step 4:- α-ketoglutarate molecules will then convert into succinyl CoA (4C) under the catalyzation of the α-ketoglutarate dehydrogenase enzyme complex. One more carbon dioxide and NADH molecule get released.Step 5:- The enzyme succinyl CoA synthetase will convert the Succinyl CoA into the succinate molecule.Step 6:- Here the enzyme succinate dehydrogenase will oxidise the Succinate into the fumarate.Step 7:- Then fumarate gets converted to malate.Step 8:- Lastly the Malate is dehydrogenated for the creation of oxaloacetate, which restarts the process again.