Question 1

Describe the function of protons in the mechanism of ATP synthesis by the F1 subunit of ATP synthase.

Accepted Answer

Recent evidence suggests that the role o

Question 2

Explain why less ATP is made from the reoxidation of FADH2 as compared to NADH.

Accepted Answer

Complex II is not a proton pump. When el

Question 3

What type of gradient is critical to ATP formation by oxidative phosphorylation?

Accepted Answer

A)  sodium ion 
B)  chloride ion 
C)  proton 
D)  potassium ion 
E)  None of the answers is correct. 
A)  sodium ion 
B)  chloride ion 
C)  proton 
D)  potassium ion 
E)  None of the answers is correct.

Question 4

In the malate-aspartate shuttle, electrons from NADH are transferred to ________, forming malate.

Accepted Answer

A)  oxaloacetate 
B)  aspartate 
C)  acetate 
D)  glutamate 
E)  None of the answers is correct. 
A)  oxaloacetate 
B)  aspartate 
C)  acetate 
D)  glutamate 
E)  None of the answers is correct.

Question 5

________________ carries electrons from Complex III to Complex IV.

Accepted Answer

The answer of ________________ carries electrons from Complex III to...

Question 6

Explain why carbon monoxide is toxic.

Accepted Answer

Carbon monoxide binds to the ferrous ion

Question 7

Draw the structure of a mitochondrion and indicate the sites of oxidative phosphorylation and the citric acid cycle. Be sure to label your figure to clearly denote where these processes take place.

Accepted Answer

The drawing should include the overall s

Question 8

Which of the citric acid cycle enzymes is also part of an electron-transport complex?

Accepted Answer

A)  isocitrate dehydrogenase 
B)  $\alpha$-ketoglutarate dehydrogenase 
C)  succinate dehydrogenase 
D)  malate dehydrogenase 
E)  None of the answers is correct. 
A)  isocitrate dehydrogenase 
B)  $\alpha$-ketoglutarate dehydrogenase 
C)  succinate dehydrogenase 
D)  malate dehydrogenase 
E)  None of the answers is correct.

Question 9

What type of enzyme plays a key role in apoptosis?

Accepted Answer

A)  cytochrome P450 
B)  electron-transport complexes 
C)  caspase 
D)  enzymes of the citric acid cycle 
E)  None of the answers is correct. 
A)  cytochrome P450 
B)  electron-transport complexes 
C)  caspase 
D)  enzymes of the citric acid cycle 
E)  None of the answers is correct.

Question 10

Discuss the evolution of the cytochrome c protein.

Accepted Answer

Cytochrome c has been studied in many or

Exam 18: Oxidative Phosphorylation

Describe the function of protons in the mechanism of ATP synthesis by the F1 subunit of ATP synthase.

Explain why less ATP is made from the reoxidation of FADH2 as compared to NADH.

What type of gradient is critical to ATP formation by oxidative phosphorylation?

In the malate-aspartate shuttle, electrons from NADH are transferred to ________, forming malate.

________________ carries electrons from Complex III to Complex IV.

Explain why carbon monoxide is toxic.

Draw the structure of a mitochondrion and indicate the sites of oxidative phosphorylation and the citric acid cycle. Be sure to label your figure to clearly denote where these processes take place.

Which of the citric acid cycle enzymes is also part of an electron-transport complex?

What type of enzyme plays a key role in apoptosis?

Discuss the evolution of the cytochrome c protein.

Biochemistry: an Evolving Science

Protein Composition and Structure

Exploring Proteins and Proteomes

DNA, RNA, and the Flow of Genetic Information

Exploring Genes and Genomes

Exploring Evolution and Bioinformatics

Hemoglobin: a Portrait of a Protein in Action

Enzymes: Basic Concepts and Kinetics

Catalytic Strategies

Regulatory Strategies

Carbohydrates

Lipids and Cell Membranes

Membrane Channels and Pumps

Signal-Transduction Pathways

Metabolism: Basic Concepts and Design

Glycolysis and Gluconeogenesis

The Citric Acid Cycle

The Light Reactions of Photosynthesis

The Calvin Cycle and the Pentose Phosphate Pathway

Glycogen Metabolism

Fatty Acid Metabolism

Protein Turnover and Amino Acid Catabolism

The Biosynthesis of Amino Acids

Nucleotide Biosynthesis

Biosynthesis of Membrane Lipids and Steroids

The Integration of Metabolism

DNA Replication, Repair, and Recombination

Rna Synthesis and Processing

Protein Synthesis

The Control of Gene Expression in Prokaryotes

The Control of Gene Expression in Eukaryotes

Sensory Systems

The Immune System

Molecular Motors

Drug Development

Filters

Describe the function of protons in the mechanism of ATP synthesis by the F₁ subunit of ATP synthase.

Explain why less ATP is made from the reoxidation of FADH₂ as compared to NADH.