Exam 22: Aerobic Respiration and Energy Production

Which of the following compounds, in high concentration, is a negative effector of citrate synthase, the enzyme that catalyzes the first step of the citric acid cycle?

In what way is the reaction shown a key one in carbohydrate catabolism?

Cyanide binds irreversibly to the heme group in cytochrome oxidase, which blocks electron transfer reactions.

How many cycles of the citric acid cycle are required to completely oxidize all the pyruvate formed when a molecule of glucose undergoes glycolysis?

What key function does the urea cycle play in the degradation of amino acids?

What is the term for the region of a mitochondrion that is enclosed by the inner membrane?

The protein complexes responsible for oxidative phosphorylation are embedded in the inner mitochondrial membrane.

What is another name for the F₀F₁ complex involved in oxidative phosphorylation?

What is the source of energy for the synthesis of ATP in oxidative phosphorylation?

Which of the following compounds is aconitate, the intermediate produced when the enzyme aconitase catalyzes the dehydration of citrate?

What is the usual fate of the α-amino group in the catabolism of amino acids?

What alternative name of the citric acid cycle is used in honor of the scientist who first proposed the steps of the cycle?

Step 7 of the citric acid cycle is shown below.Which of the following correctly describes what is occurring in this step?

In the first stage of amino acid degradation, the carboxylate group is removed as carbon dioxide.

The ribosomes found in eukaryotic cells allow the mitochondria to synthesize some of their own proteins.

FADH₂ is a less powerful reducing agent (electron donor) than NADH.What is the consequence of this in oxidative phosphorylation?

Where in the mitochondrion are the protein complexes responsible for oxidative phosphorylation located?

What is the primary function of the citric acid cycle in metabolism?

What is the primary function of electron transport and oxidative phosphorylation?

Pyruvate is the key intermediate through which carbohydrates, amino acids, and fatty acids degrade and enter into the citric acid cycle.