Question

explain the Kreb's cycle with reaction .​

Answer 1

Explanation:

The eight steps of the citric acid cycle are a series of redox, dehydration, hydration, and decarboxylation reactions. Each turn of the cycle forms one GTP or ATP as well as three NADH molecules and one FADH2 molecule, which will be used in further steps of cellular respiration to produce ATP for the cell.

Answer 2

Explanation:

Kreb's cycle is a cyclic process that occurs in the mitochondrial matrix, in the presence of oxygen.

Step 1: The cycle starts with the condensation of an acetyl group with oxaloacetic acid and water to form citric acid, with a release of CoA molecule. The enzyme involved in this conversion is citrate synthase.

Step 2: Citrate then isomerises to form isocitrate.

Step 3: The synthesis of citrate is followed by two successive steps of decarboxylation — first, the formation of a-ketoglutaric acid, and then, that of succinyl-CoA.

Step 4: This succinyl-CoA gets oxidised to form malic acid, which in turn gets converted into oxaloacetic acid, thereby allowing the cycle to continue.