Creb cycle is a intermediate cycle between the glucose convertion to ATPs. It starts with the end product of glycolysis, pyrivate to give acetyle CoA. Gving rise to NADH,FAD,GTP, . A comple of 6 turns of this cycle is required to produce 1 glucose molecule.
\tKreb’s cycle takes place in the mitochondrial matrix.\tSeveral intermediate compounds are formed, which contain three carboxylic groups and therefore the process is called as tricarboxylic acid cycle (TCA).\tFirst, the condensation of acetyl group with oxaloacetic acid (OAA) and water takes place to yield citric acid, catalysed by the enzyme citrate synthase and a molecule of CoA is released.\tCitrate is then isomerised to isocitrate, which is followed by two successive steps of decarboxylation, leading to the formation of α-ketoglutaric acid and then succinyl-CoA.\tSuccinyl-CoA is oxidised to OAA allowing the cycle to continue and during the conversion of succinyl-CoA to succinic acid a molecule of GTP is synthesised.\tIn a coupled reaction, GTP is converted to GDP with the simultaneous synthesis of ATP from ADP.Pyruvic acid + 4 NAD+ + FAD+ + 2H2O + ADP + Pi à 3CO2 + 4NADH + 4H+ + FADH2 + ATP\tDuring the process, 8NADH2, 2FADH2, 2 GTPs are formed.\t

This is the cycle through which plant get glucose and carbondioxide which it has used . it mainly consists of three process :- carboxilation , reduction & regeneration

It is a cyclic series of metabolic reactions of aerobic respiration that occur inside mitochondria Acetyl – Coa is completely oxidised into carbon dioxide and reduced coenzyme NADH2 as well as FADH2 are produced