The Two Moles of CO₂ Produced in the First Turn

question 34

Multiple Choice

The two moles of CO₂ produced in the first turn of the citric acid cycle have their origin in the:

• A) carboxyl and methylene carbons of oxaloacetate
• B) carboxyl group of acetate and a carboxyl group of oxaloacetate.
• C) carboxyl group of acetate and the keto group of oxaloacetate.
• D) two carbon atoms of acetate.
• E) two carboxyl groups derived from oxaloacetate.

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