which molecule attaches to the coenzyme A in Kreb's cycle?

Answers:
oxaloacetate

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The 4th step in the Krebs' cycle: The alpha-ketoglutarate dehydrogenase complex, which includes HS-CoA. The product is Succinyl-CoA. This is a key regulatory step in the Citric Acid Cycle.Oxaloacetate will react with Acetyl CoA (not plain CoA) to form citrate synthase. So if you were asking about Acetyl CoA, the answer is oxaloacetate, but if you're asking about CoA, it's the 4th step described above.

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