Q.The compound which links glycolysis and Krebs Cycle is:

Pyruvate oxidation, also called the link or transition reaction, is the step that converts the pyruvic acid produced by cytoplasmic glycolysis into acetyl coenzyme-A (acetyl CoA) once it enters the mitochondrial matrix. Each pyruvate is oxidatively decarboxylated -- combined with coenzyme A while losing one carbon as CO2 -- by the pyruvate dehydrogenase complex (aided by Mg2+), an irreversible reaction that yields one $NADH+H^+$ and one CO2 per pyruvate: $2\,CH_3COCOOH + 2NAD^+ + 2CoA \rightarrow 2\,CH_3CO{\cdot}CoA + 2NADH + 2H^+ + 2CO_2\uparrow$. The pyruvate dehydrogenase complex is built from three enzymes (pyruvate dehydrogenase, dihy …