Which one of the following enzymes provides a link between glycolysis and the citric acid cycle?

PDH complex consist of 3 Enzymes and 5 Coenzymes Three enzymes are: Pyruvate Dehydrogenase bound to Thiamin Diphosphate Dihydrolipoyl Transacetylase, the prosthetic group is oxidised Lipomide Dihydrolipoyl  Dehydrogenase, contains FAD. Coenzymes (very important) Thiamine Diphosphate (TDP) Lipomide Coenzyme A FAD NAD Key Concept:  Pyruvate Dehydrogenase  which converts pyruvate to acetyl CoA provides a connecting link between glycolysis and citric acid cycle.