6. In oxidative phosphorylation, the endergonic ADPphosphorylation is directly c

Question

6. In oxidative phosphorylation, the endergonic ADPphosphorylation is directly coupled to the exergonic

      A. NAD+ reductiontoNADH.              B. glucose breakdown to pyruvate.

      C. pyruvateoxidation.                            D. citric acid cycle.

      E. diffusion ofH+ from high to low concentration.

7. The mitochondrial electron transport chain enables

      A. active transport ofH+.                                   B. production of O2.

      C. reduction ofNAD+.                           D. production of citrate (for the citric acid cycle).

8. Fermentation is beneficial to cells under anaerobicconditions because it enables either directly or indirectly

      A. ATPproduction.                                B. NADH reduction.

      C. the citric acidcycle.                           D. both A and B.

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