Exam 13: The Citric Acid Cycle

Which of the following is/are true statements about the succinate dehydrogenase reactions?

Each of the following catalyzed reactions of the citric acid cycle appears to be regulated except

Most bacteria do not have a complete citric acid cycle.

The overall goal of the citric acid cycle is to oxidize pyruvate, form reduced coenzymes, and produce ATP.

Which cofactor is not used by the pyruvate dehydrogenase complex?

The activity of dihydrolipoamide acetyltransferase E₂) is inhibited when the concentration of of acetyl CoA is decreased.

The eukaryotic succinate dehydrogenase complex is dissolved in the mitochondrial matrix.

Which enzyme does not catalyze a reaction that releases carbon dioxide?

Which intermediate of the citric acid cycle has a plane of symmetry?

Elevated calcium levels lead to

The citric acid cycle can be viewed as a multi-step catalyst simply because it returns to its original state after each round of reactions.

The carbon atoms that enter the citric acid cycle via acetyl CoA are the same ones released as carbon dioxide during one round of the citric acid cycle.

Each of the following leads to a biosynthetic pathway except

Pyruvate translocase is specific for transporting pyruvate across the inner mitochondrial membrane.

Isocitrate is more easily oxidized than citrate because it has a secondary alcohol group, whereas citrateʹs alcohol group is tertiary.

Which is not produced by the citric acid cycle?

Please match the following reactions to their respective energy yielding products. Please note that a product may be used once, more than once, or not at all as an answer. A) $\mathrm{NADH}$ B) ADP C) GTP or ATP D) $\mathrm{NADH}$ E) $\mathrm{QH}_{2}$ F) $\mathrm{NAD}^{+}$ -Succinyl CoA synthetase

What type of reaction is the conversion of fumarate to malate?

A carbon atom that has single bond to four substituents with exactly two of the four substituents identical is called a .

All members of the aconitase family of proteins contain an iron sulfur cluster.