A researcher incubates cultured eukaryotic cells with pyruvate labeled with $^{14}\text{C}$ specifically at its carboxyl carbon (C-1) to investigate the transition step of aerobic respiration. During this stage, the cells process the two pyruvate molecules generated from one mole of glucose into acetyl-CoA. What is the immediate biochemical fate of the labeled carbon and the total yield of reduced electron carriers produced exclusively during this process per mole of glucose?

A) The label is incorporated into the acetyl group of acetyl-CoA, and 2 $FADH_2$ molecules are produced.

B) The label is released into the surrounding medium as $CO_2$, and 2 NADH molecules are produced.

C) The label is released into the surrounding medium as $CO_2$, and 2 ATP plus 2 NADH molecules are produced.

D) The label is incorporated into citrate within the matrix, and 4 NADH molecules are produced.

Pyruvate oxidation Transitional Reasoning Practice

Biology · Cellular Energetics · Biology · Cellular Respiration

1 Biology practice questions on Pyruvate oxidation. Questions that build towards applied reasoning.

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Cellular Energetics · Biology

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