Pyruvate Oxidation and Pyruvate Dehydrogenase Enzyme Complex Quiz
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Questions and Answers

Which enzyme decarboxylates pyruvate to form acetyl molecule?

  • Dihydrolipoyl transacetylase (E2)
  • Dihydrolipoyl dehydrogenase (E3)
  • Thymine pyrophosphate (TPP)
  • Pyruvate dehydrogenase (E1) (correct)

    • What is the role of dihydrolipoyl transacetylase (E2) in pyruvate oxidation?

  • Reducing FAD into FADH2
  • Oxidizing dihydrolipoyl into lipoamide
  • Transferring acetyl into a lipoamide molecule (correct)
  • Decarboxylating pyruvate to form acetyl molecule

    • What is the product of the oxidation of 1 pyruvate molecule?

  • 2 Acetyl CoA, 2 CO2, 2 NADH
  • 1 Acetyl CoA, 1 CO2, 2 NADH
  • 1 Acetyl CoA, 2 CO2, 1 NADH
  • 1 Acetyl CoA, 1 CO2, 1 NADH (correct)

    • What does dihydrolipoyl dehydrogenase (E3) oxidize into lipoamide?

    <p>Dihydrolipoyl</p> Signup and view all the answers

    Which coenzyme is used to reduce NAD+ into NADH in pyruvate oxidation?

    <p>FADH2</p> Signup and view all the answers

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