In Step 4 of the Citric Acid Cycle, the Reduction

question 36

Multiple Choice

In step 4 of the citric acid cycle, the reduction of NAD⁺ to NADH is coupled to the generation of CO₂ and the formation of a high-energy thioester bond.The energy of the thioester bond is harnessed in step 5.What is the energy used for?

• A)to generate a molecule of GTP
• B)to generate a molecule of ATP
• C)to generate a proton gradient
• D)to generate a molecule of NADH

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