Exam 20: The Electron Transport Chain

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Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is the prosthetic group in Complex I that accepts electrons from NADH.

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Question 1

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Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is where oxidative phosphorylation occurs in eukaryotes.

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Question 2

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Describe the role that Q takes as the NADH-Q oxidoreductase transfers electrons from NADH to coenzyme Q.

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Question 3

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Electrons are transferred from FMNH2 to iron-sulfur centers, where one Q molecule accepts the electrons. The second Q molecule in this cycle is in the inner mitochondrial membrane and is part of the Q pool. In accepting the electrons, two protons are bound to Q, resulting in a reduction of the lipophilic carrier.

Describe the path by which electrons from FADH2 enter the electron-transport chain.

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Question 4

________________ is an enzyme that scavenges H2O2 and converts it to molecular oxygen and water.

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Question 5

What pathologic condition(s) results from free-radical injury?

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Question 6

Cytochrome c oxidase contains two heme A groups and three ________________ ions.

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Question 7

What are the two half-reactions for the reduction of O2 by NADH?

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Question 8

In the Rieske center, the iron-sulfur center is coordinated to the amino acid(s):

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Question 9

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The electron carrier _______________ is a derivative of quinone and has an isoprenoid tail.

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Question 10

In a table of reduction potentials, values for E`0 are given as plus (+) or minus (-). What is this in reference to?

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Question 11

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The permeability of the outer mitochondrial membrane is primarily due to the presence of _______________.

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Question 12

What are the mechanisms that a cell uses to protect against the production of oxygen radicals?

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Question 13

Which of the following does not pump protons?

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Question 14

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The enzyme _______________ catalyzes the reduction of O2.

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Question 15

What is a cytochrome?

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Question 16

________________ is/are the result of uncontrolled electron transfer to oxygen

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Question 17

The transfer of a single electron to O2 forms the reactive ________________ ion.

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Question 18

________________ carries electrons from Complex III to Complex IV.

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Question 19

Which of the following does not participate in, nor is a component of, the electron-transport chain?

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Question 20

Showing 1 - 20 of 43

Exam 20: The Electron Transport Chain

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is the prosthetic group in Complex I that accepts electrons from NADH.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is where oxidative phosphorylation occurs in eukaryotes.

Describe the role that Q takes as the NADH-Q oxidoreductase transfers electrons from NADH to coenzyme Q.

Describe the path by which electrons from FADH2 enter the electron-transport chain.

________________ is an enzyme that scavenges H2O2 and converts it to molecular oxygen and water.

What pathologic condition(s) results from free-radical injury?

Cytochrome c oxidase contains two heme A groups and three ________________ ions.

What are the two half-reactions for the reduction of O2 by NADH?

In the Rieske center, the iron-sulfur center is coordinated to the amino acid(s):

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The electron carrier _______________ is a derivative of quinone and has an isoprenoid tail.

In a table of reduction potentials, values for E`0 are given as plus (+) or minus (-). What is this in reference to?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The permeability of the outer mitochondrial membrane is primarily due to the presence of _______________.

What are the mechanisms that a cell uses to protect against the production of oxygen radicals?

Which of the following does not pump protons?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The enzyme _______________ catalyzes the reduction of O2.

What is a cytochrome?

________________ is/are the result of uncontrolled electron transfer to oxygen

The transfer of a single electron to O2 forms the reactive ________________ ion.

________________ carries electrons from Complex III to Complex IV.

Which of the following does not participate in, nor is a component of, the electron-transport chain?

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant Dna Techniques

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