Question 1

Which of the following is not one of the major transport systems of the inner mitochondrial membrane?

Accepted Answer

A) porin channel 
B) dicarboxylate carrier 
C) tricarboxylate carrier 
D) pyruvate carrier 
E) ATP-ADP carrier 
A) porin channel 
B) dicarboxylate carrier 
C) tricarboxylate carrier 
D) pyruvate carrier 
E) ATP-ADP carrier

Question 2

Each of the following is a step in the degradation of fatty acids except

Accepted Answer

A) hydration. 
B) activation. 
C) thiolysis. 
D) acylation. 
E) oxidation. 
A) hydration. 
B) activation. 
C) thiolysis. 
D) acylation. 
E) oxidation.

Question 3

Which of the following electron carriers transfers both protons and electrons?

Accepted Answer

A) cytochrome a 
B) cytochrome b 
C) coenzyme Q 
D) iron-sulfur proteins 
E) iron-copper proteins 
A) cytochrome a 
B) cytochrome b 
C) coenzyme Q 
D) iron-sulfur proteins 
E) iron-copper proteins

Question 4

Pyruvate crosses the ________ and the ________ membranes prior to its oxidation during respiration.

Accepted Answer

outer mito

Question 5

Each of the following could be the terminal electron acceptor in anaerobic respiration except

Accepted Answer

A) O2. 
B) sulfur. 
C) protons. 
D) iron. 
E) All could serve as the terminal electron acceptor in anaerobic respiration. 
A) O2. 
B) sulfur. 
C) protons. 
D) iron. 
E) All could serve as the terminal electron acceptor in anaerobic respiration.

Question 6

The form of fatty acid that is transported into the mitochondrion is

Accepted Answer

A) sulfated fatty acid. 
B) fatty acyl CoA. 
C) decarboxylated fatty acid residues. 
D) triacylglycerols. 
E) ketone bodies. 
A) sulfated fatty acid. 
B) fatty acyl CoA. 
C) decarboxylated fatty acid residues. 
D) triacylglycerols. 
E) ketone bodies.

Question 7

Directional pumping of protons during electron transport establishes a(n)________ across the inner mitochondrial membrane.

Accepted Answer

electroche

Question 8

ATP synthesis that involves phosphorylation events linked to O2-dependent electron transport is called ________.

Accepted Answer

oxidative

Question 9

In eukaryotes,pyruvate is converted to acetyl CoA

Accepted Answer

A) in the cellular cytosol. 
B) during passage through the mitochondrial outer membrane. 
C) in the intermembrane space. 
D) during passage through the inner mitochondrial membrane. 
E) in the mitochondrial matrix. 
A) in the cellular cytosol. 
B) during passage through the mitochondrial outer membrane. 
C) in the intermembrane space. 
D) during passage through the inner mitochondrial membrane. 
E) in the mitochondrial matrix.

Question 10

High NADH concentration regulates pyruvate oxidative decarboxylation and the citric acid cycle by allosterically inhibiting interacting with each of the following enzymes except

Accepted Answer

A) pyruvate dehydrogenase. 
B) isocitrate dehydrogenase. 
C) α-ketoglutarate dehydrogenase. 
D) malate dehydrogenase. 
E) succinate dehydrogenase. 
A) pyruvate dehydrogenase. 
B) isocitrate dehydrogenase. 
C) α-ketoglutarate dehydrogenase. 
D) malate dehydrogenase. 
E) succinate dehydrogenase.

Question 11

Each of the following molecules is an electron carrier in the electron transport system except

Accepted Answer

A) flavoproteins. 
B) iron-containing cytochromes. 
C) iron-sulfur proteins. 
D) coenzyme Q. 
E) All of the above are electron carriers. 
A) flavoproteins. 
B) iron-containing cytochromes. 
C) iron-sulfur proteins. 
D) coenzyme Q. 
E) All of the above are electron carriers.

Question 12

Aerobic respiration generates up to ________ ATP molecules per glucose molecule.

Accepted Answer

A) 2 
B) 16 
C) 24 
D) 38 
E) 42 
A) 2 
B) 16 
C) 24 
D) 38 
E) 42

Question 13

NAD contains the B vitamin niacin as part of its structure,whereas FAD contains another B vitamin,________,as part of its structure.

Accepted Answer

The answer of NAD contains the B vitamin niacin as...

Question 14

Which of the following molecules is incorrectly matched with the number of carbon atoms it possesses?

Accepted Answer

A) citrate; 6 
B) α-ketoglutarate; 5 
C) acetyl CoA; 2 
D) malate; 5 
E) isocitrate; 6 
A) citrate; 6 
B) α-ketoglutarate; 5 
C) acetyl CoA; 2 
D) malate; 5 
E) isocitrate; 6

Question 15

The overall efficiency of aerobic respiration in eukaryotes is approximately

Accepted Answer

A) 10%. 
B) 25%. 
C) 55%. 
D) 75%. 
E) 100%. 
A) 10%. 
B) 25%. 
C) 55%. 
D) 75%. 
E) 100%.

Question 16

Mitochondrial crista junctions

Accepted Answer

A) are large pores in the inner membrane. 
B) are associated with the movement of material from the cytosol into the intermembrane space. 
C) contain the mitochondrial DNA. 
D) connect thylakoid membranes. 
E) limit movement of material between the intracristal and intermembrane spaces. 
A) are large pores in the inner membrane. 
B) are associated with the movement of material from the cytosol into the intermembrane space. 
C) contain the mitochondrial DNA. 
D) connect thylakoid membranes. 
E) limit movement of material between the intracristal and intermembrane spaces.

Question 17

In electron transport,each of the following respiratory complexes is involved in the flow of electrons from NADH to O2 except

Accepted Answer

A) complex I. 
B) complex II. 
C) complex III. 
D) complex IV. 
E) All are involved in the flow of electrons from NADH. 
A) complex I. 
B) complex II. 
C) complex III. 
D) complex IV. 
E) All are involved in the flow of electrons from NADH.

Question 18

Mitochondrial DNA replication occurs in the ________ of the mitochondrion.

Accepted Answer

The answer of Mitochondrial DNA replication occurs in the ________...

Exam 10: Chemotrophic Energy Metabolism: Aerobic Respiration

Which of the following is not one of the major transport systems of the inner mitochondrial membrane?

Each of the following is a step in the degradation of fatty acids except

Which of the following electron carriers transfers both protons and electrons?

Pyruvate crosses the ________ and the ________ membranes prior to its oxidation during respiration.

Each of the following could be the terminal electron acceptor in anaerobic respiration except

The form of fatty acid that is transported into the mitochondrion is

Directional pumping of protons during electron transport establishes a(n)________ across the inner mitochondrial membrane.

ATP synthesis that involves phosphorylation events linked to O2-dependent electron transport is called ________.

In eukaryotes,pyruvate is converted to acetyl CoA

High NADH concentration regulates pyruvate oxidative decarboxylation and the citric acid cycle by allosterically inhibiting interacting with each of the following enzymes except

Each of the following molecules is an electron carrier in the electron transport system except

Aerobic respiration generates up to ________ ATP molecules per glucose molecule.

NAD contains the B vitamin niacin as part of its structure,whereas FAD contains another B vitamin,________,as part of its structure.

Which of the following molecules is incorrectly matched with the number of carbon atoms it possesses?

The overall efficiency of aerobic respiration in eukaryotes is approximately

Mitochondrial crista junctions

In electron transport,each of the following respiratory complexes is involved in the flow of electrons from NADH to O2 except

Mitochondrial DNA replication occurs in the ________ of the mitochondrion.

A Preview of Cell Biology

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Enzymes: the Catalysts of Life

Membranes: Their Structure,function,and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

DNA Replication, repair, and Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

Filters

Pyruvate crosses the and the membranes prior to its oxidation during respiration.

ATP synthesis that involves phosphorylation events linked to O₂-dependent electron transport is called ________.

In electron transport,each of the following respiratory complexes is involved in the flow of electrons from NADH to O₂ except