The Citric Acid Cycle

Problem : What is the name of the enzyme that catalyzes the reaction that joins a molecule of acetyl-CoA and oxaloacetate?

Problem : From which position on citrate to which position is the –OH group transferred in the second step of the citric acid cycle by the enzyme acontinase?

Problem : What two types of reactions are catalyzed by the enzyme isocitrate dehydrogenase in the third reaction of the citric acid cycle?

Problem : In which of the first five steps of the citric acid cycle is NADH produced?

Problem : What citric acid cycle enzyme is responsible for catalyzing the reaction that produces GTP?

Problem : Fill in the blanks with the appropriate choice. FAD is the __________ (oxidized/reduced) form of flavin adenine dinucleotide while FADH is the __________ (oxidized/reduced) form.

Problem : What is the product when succinate is oxidized by the removal of two hydrogens by the enzyme succinate dehydrogenase?

Problem : Which molecule, NAD or FAD, would likely oxidize the following molecule?

Figure %: Oxidation of an alcohol to an aldehyde.

Problem : Name the enzyme that converts fumarate to L-malate.

Problem : Name the "final product" of the citric acid cycle. Why is this product not really the final product?