Exam 5: Cellular Respiration

Refer to the illustration of a mitochondrion. Match the labelled parts of the mitochondrion with the steps of cellular respiration. A labelled part may be used once, more than once, or not at all. -electron transfer system A)outer mitochondrial membrane B)intermembrane compartment C)cytosol D)inner mitochondrial membrane E)matrix

Which of the following directly powers the ATP synthase?

Suppose that the pH of the matrix was significantly lower than the inner mitochondrial space. How would ATP synthase function differently?

During the process of pyruvate oxidation, pyruvate is broken down and the remaining two carbons are attached to coenzyme A.

Which of the following are directly responsible for pumping protons out of the matrix in the mitochondria?

For every glucose molecule that goes through cellular respiration, how many times is a carbon molecule fully oxidized to CO₂ in the citric acid cycle?

Both plants and animals possess mitochondria, which are used for cellular respiration to make ATP.

Refer to the illustration of a mitochondrion. Match the labelled parts of the mitochondrion with the steps of cellular respiration. A labelled part may be used once, more than once, or not at all. -citric acid cycle A)outer mitochondrial membrane B)intermembrane compartment C)cytosol D)inner mitochondrial membrane E)matrix

Which piece of the ATP synthase contains the channel for H⁺ to flow through?

What is the fate of CoA after it delivers an acetyl group into the citric acid cycle?

Molecular oxygen gets into the body through breathing and leaves the body as carbon dioxide.

Which of the following directly supply the electrons to the electron transport system?

Glycolysis can take place in the absence of which of the following small molecules?

Which of these statements best explains why food is not energy?

What is the final product of glycolysis?

If glycolysis is considered universal, which of the following illustrates that?

Which of these chemical reactions are common in cellular respiration?

For a molecule to be reduced, it can gain electrons from the environment. In what other way can a molecule be reduced?

Two mobile electron carriers that are important for the electron transport system are cytochrome c and ubiquinone.

What is the purpose of the last stage of the citric acid cycle?