Citric Acid Cycle: Energy Metabolism

What form must fuel molecules take to enter the citric acid cycle?

In the context of the citric acid cycle, what is the primary fate of acetate?

Which of the following is the primary role of the citric acid cycle in aerobic metabolism?

Which of the following is a direct output of each turn of the citric acid cycle?

What is the ultimate destination of NADH and $FADH_2$ produced during the citric acid cycle?

Besides energy production, what other crucial role does the citric acid cycle play in the cell?

Where within the cell do all the enzymatic reactions of the citric acid cycle take place?

How many molecules of $CO_2$ are produced per molecule of acetyl-CoA that enters the citric acid cycle?

What is the net production of NADH from one turn of the citric acid cycle?

Which of the following reactions in the citric acid cycle involves the direct consumption of water?

Which enzyme catalyzes the condensation of acetyl-CoA with oxaloacetate to form citrate?

What is the role of the enzyme aconitase in the citric acid cycle?

Which enzyme catalyzes the first oxidation reaction in the citric acid cycle?

Which of the following enzymatic reactions in the citric acid cycle is similar to the reaction converting pyruvate to acetyl-CoA?

The conversion of succinyl-CoA to succinate is coupled to which of the following?

Which enzyme catalyzes the oxidation of succinate to fumarate in the citric acid cycle?

What type of reaction is catalyzed by fumarase in the citric acid cycle?

Which enzyme catalyzes the final oxidation reaction in the citric acid cycle, regenerating oxaloacetate?

Which of the following best describes the regulation of pyruvate dehydrogenase?

What limits the activity of citrate synthase?

How is isocitrate dehydrogenase regulated?

By what mechanism is $\alpha$-ketoglutarate dehydrogenase regulated?

Which of the following describes a key function of the pentose phosphate pathway?

Which electron carrier is primarily used to reduce substrates and functions synthetically, such as in steroid and fatty acid synthesis?

Where does the pentose phosphate pathway take place within the cell?

What are the two main phases of the pentose phosphate pathway?

Which of the following is directly generated in the oxidative phase of the pentose phosphate pathway?

The first committed step in the oxidative phase of the pentose phosphate pathway is catalyzed by which enzyme?

What type of reaction is catalyzed by 6-phosphogluconate dehydrogenase in the pentose phosphate pathway?

What is the function of ribose phosphate isomerase in the pentose phosphate pathway?

What is the fate of ribulose 5-phosphate in cells that require more NADPH than pentose phosphates?

Which of the following conversions occurs during the nonoxidative phase of the pentose phosphate pathway?