Question 1

What is another name from for partially reduced ubiquinone?

Accepted Answer

A) ubiquinone 
B) ubisemiquinone 
C) ubiquinol 
D) ubiquinde 
E) ubiquinate 
A) ubiquinone 
B) ubisemiquinone 
C) ubiquinol 
D) ubiquinde 
E) ubiquinate

Question 2

What evidence suggests that the inner mitochondrial membrane has evolved from a bacterial plasma membrane? (Select all correct choices)

Accepted Answer

A) the presence of porins in both membranes 
B) the virtual absence of cholesterol from both membranes 
C) both membranes being rich in cardiolipin 
D) both membranes being rich in diphosphatidylglycerol 
A) the presence of porins in both membranes 
B) the virtual absence of cholesterol from both membranes 
C) both membranes being rich in cardiolipin 
D) both membranes being rich in diphosphatidylglycerol

Question 3

Which molecule below plays a key role in regulating respiratory rate in the mitochondrion?

Accepted Answer

A) ADP 
B) inorganic phosphate 
C) ATP 
D) molecular oxygen 
E) gaseous nitrogen 
A) ADP 
B) inorganic phosphate 
C) ATP 
D) molecular oxygen 
E) gaseous nitrogen

Question 4

Mitochondrial DNA suffers a higher mutation rate than nuclear DNA by a factor of:

Accepted Answer

A) 2 
B) 10 
C) 50 
D) 1500 
A) 2 
B) 10 
C) 50 
D) 1500

Question 5

Standard redox potential is measured by:

Accepted Answer

A) connecting a reference half cell to a sample half cell via a MgSO4 salt bridge 
B) detecting proton flow across the salt bridge 
C) using a voltmeter to measure electron flow 
D) employing a reference half cell containing a 0.1M H+ solution in equilibrium with H2 gas at 1 atmosphere pressure 
A) connecting a reference half cell to a sample half cell via a MgSO4 salt bridge 
B) detecting proton flow across the salt bridge 
C) using a voltmeter to measure electron flow 
D) employing a reference half cell containing a 0.1M H+ solution in equilibrium with H2 gas at 1 atmosphere pressure

Question 6

If a couple had one child with ragged red fiber disease and wished to have a healthy second child, mitochondrial replacement therapy might be discussed as an option. Technically, how many parents would the child possess after such a treatment?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 7

What is unusual about the way that H+ ions are transported across the inner mitochondrial membrane as compared to the movement of other ions like Na+ and Cl- ions?

Accepted Answer

A) Na+ and Cl- ions must traverse the full distance, but H+ ions materialize on the other side of the membrane. 
B) Na+ and Cl- ions must traverse the full distance, but H+ ions can hop through a channel by exchanging themselves with other protons found along the pathway. 
C) Na+ and Cl- ions can hop through a channel by exchanging themselves with other similar ions found along the pathway, but H+ ions must traverse the full distance. 
D) Na+ and Cl- ions must traverse the full distance, but H+ ions must only go halfway. 
E) Na+ and Cl- ions must traverse the full distance, but H+ ions must change into neutrons first. 
A) Na+ and Cl- ions must traverse the full distance, but H+ ions materialize on the other side of the membrane. 
B) Na+ and Cl- ions must traverse the full distance, but H+ ions can hop through a channel by exchanging themselves with other protons found along the pathway. 
C) Na+ and Cl- ions can hop through a channel by exchanging themselves with other similar ions found along the pathway, but H+ ions must traverse the full distance. 
D) Na+ and Cl- ions must traverse the full distance, but H+ ions must only go halfway. 
E) Na+ and Cl- ions must traverse the full distance, but H+ ions must change into neutrons first.

Question 8

What percentage of blood oxygen is dissolved in the liquid plasma component?

Accepted Answer

A) 0.5% 
B) 1% 
C) 2% 
D) 10% 
A) 0.5% 
B) 1% 
C) 2% 
D) 10%

Question 9

What drives the rotation of the F1 head of ATP synthase?

Accepted Answer

A) proton movement from intermembrane space to the matrix 
B) proton movement from the matrix to the intermembrane space 
C) ATP hydrolysis 
D) ATP condensation 
E) proton movement from the cytoplasm to the intermembrane space 
A) proton movement from intermembrane space to the matrix 
B) proton movement from the matrix to the intermembrane space 
C) ATP hydrolysis 
D) ATP condensation 
E) proton movement from the cytoplasm to the intermembrane space

Question 10

The inner boundary membrane is particularly rich in which of the following?

Accepted Answer

A) protons 
B) transporter proteins responsible for the import of mitochondrial proteins 
C) Krebs cycle enzymes 
D) enzymes of the glycolytic pathway 
E) glycosaminoglycans 
A) protons 
B) transporter proteins responsible for the import of mitochondrial proteins 
C) Krebs cycle enzymes 
D) enzymes of the glycolytic pathway 
E) glycosaminoglycans

Question 11

Which of the following is true of peroxisomes?

Accepted Answer

A) Peroxisomes contain more than 50 enzymes involved in diverse activities. 
B) Peroxisomes contain enzymes that oxidize very-long-chain fatty acids. 
C) Peroxisomes contain the enzyme luciferase, which generates the light emitted by fireflies. 
D) All of these are correct. 
A) Peroxisomes contain more than 50 enzymes involved in diverse activities. 
B) Peroxisomes contain enzymes that oxidize very-long-chain fatty acids. 
C) Peroxisomes contain the enzyme luciferase, which generates the light emitted by fireflies. 
D) All of these are correct.

Question 12

What is formed when electrons reach the bottom of the mitochondrial electron-transport chain and bind to the final electron acceptor?

Accepted Answer

A) water 
B) carbon dioxide 
C) carbon monoxide 
D) hydrogen 
E) oxygen 
A) water 
B) carbon dioxide 
C) carbon monoxide 
D) hydrogen 
E) oxygen

Question 13

Of the five types of electron carriers, which has a component located outside the lipid bilayer?

Accepted Answer

A) flavoproteins 
B) cytochromes 
C) copper atom containing carriers 
D) ubiquinone 
E) iron-sulfur proteins 
A) flavoproteins 
B) cytochromes 
C) copper atom containing carriers 
D) ubiquinone 
E) iron-sulfur proteins

Question 14

The gateway to the electron-transport chain _______________

Accepted Answer

A) catalyses the transfer of electrons from FADH2 to ubiquinone 
B) is known as FADH2 dehydrogenase 
C) catalyses the transfer of electrons from NADH to ubiquinone 
D) forms ubiquinone in its redox transfer 
A) catalyses the transfer of electrons from FADH2 to ubiquinone 
B) is known as FADH2 dehydrogenase 
C) catalyses the transfer of electrons from NADH to ubiquinone 
D) forms ubiquinone in its redox transfer

Question 15

The energy expended during the formation of ATP by ATP synthase is required to _______.

Accepted Answer

A) attach the phosphate group to ADP 
B) attach the phosphate group to ATP 
C) release the tightly bound ATP from the ATP synthase catalytic site 
D) attach the tightly bound ATP to the ATP synthase catalytic site 
E) move protons against their gradient 
A) attach the phosphate group to ADP 
B) attach the phosphate group to ATP 
C) release the tightly bound ATP from the ATP synthase catalytic site 
D) attach the tightly bound ATP to the ATP synthase catalytic site 
E) move protons against their gradient

Question 16

Complex III of the electron-transport chain (ETC)moves electrons from______________ to further down the ETC towards the terminal electron acceptor.

Accepted Answer

A) Complex I only 
B) Complex II only 
C) Complex I and Complex II 
D) Complex IV 
A) Complex I only 
B) Complex II only 
C) Complex I and Complex II 
D) Complex IV

Question 17

When fusion of mitochondria becomes more frequent than fission, the mitochondria tend to become __________. (Select all correct responses)

Accepted Answer

A) more elongated 
B) more interconnected 
C) more numerous 
D) more distinct 
A) more elongated 
B) more interconnected 
C) more numerous 
D) more distinct

Question 18

The F0 base of ATP synthase serves as ______.

Accepted Answer

A) an enzyme that synthesizes ATP 
B) an enzyme that hydrolyzes ATP 
C) a channel that conducts protons from the intermembrane space back to the matrix 
D) a channel that conducts protons from the matrix back to the intermembrane space 
E) a proton pump 
A) an enzyme that synthesizes ATP 
B) an enzyme that hydrolyzes ATP 
C) a channel that conducts protons from the intermembrane space back to the matrix 
D) a channel that conducts protons from the matrix back to the intermembrane space 
E) a proton pump

Question 19

Standard redox potential (E0)for a solution is _____________________

Accepted Answer

A) considered positive if electrons flow from the sample half cell to the reference half cell 
B) considered negative if electrons flow from the sample half cell to the reference half cell 
C) calculated in any biochemical comparison of redox potentials between cellular cofactors and other molecules 
D) measured at absolute zero (0K) 
A) considered positive if electrons flow from the sample half cell to the reference half cell 
B) considered negative if electrons flow from the sample half cell to the reference half cell 
C) calculated in any biochemical comparison of redox potentials between cellular cofactors and other molecules 
D) measured at absolute zero (0K)

What is another name from for partially reduced ubiquinone?

What evidence suggests that the inner mitochondrial membrane has evolved from a bacterial plasma membrane? (Select all correct choices)

Which molecule below plays a key role in regulating respiratory rate in the mitochondrion?

Mitochondrial DNA suffers a higher mutation rate than nuclear DNA by a factor of:

Standard redox potential is measured by:

If a couple had one child with ragged red fiber disease and wished to have a healthy second child, mitochondrial replacement therapy might be discussed as an option. Technically, how many parents would the child possess after such a treatment?

What is unusual about the way that H⁺ ions are transported across the inner mitochondrial membrane as compared to the movement of other ions like Na⁺ and Cl^- ions?

What percentage of blood oxygen is dissolved in the liquid plasma component?

What drives the rotation of the F₁ head of ATP synthase?

The inner boundary membrane is particularly rich in which of the following?

Which of the following is true of peroxisomes?

What is formed when electrons reach the bottom of the mitochondrial electron-transport chain and bind to the final electron acceptor?

Of the five types of electron carriers, which has a component located outside the lipid bilayer?

The gateway to the electron-transport chain _______________

The energy expended during the formation of ATP by ATP synthase is required to _______.

Complex III of the electron-transport chain (ETC)moves electrons from______________ to further down the ETC towards the terminal electron acceptor.

When fusion of mitochondria becomes more frequent than fission, the mitochondria tend to become __________. (Select all correct responses)

The F₀ base of ATP synthase serves as ______.

Standard redox potential (E₀)for a solution is _____________________

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

Exam 5: Aerobic Respiration and the Mitochondrion

What is another name from for partially reduced ubiquinone?

What evidence suggests that the inner mitochondrial membrane has evolved from a bacterial plasma membrane? (Select all correct choices)

Which molecule below plays a key role in regulating respiratory rate in the mitochondrion?

Mitochondrial DNA suffers a higher mutation rate than nuclear DNA by a factor of:

Standard redox potential is measured by:

If a couple had one child with ragged red fiber disease and wished to have a healthy second child, mitochondrial replacement therapy might be discussed as an option. Technically, how many parents would the child possess after such a treatment?

What is unusual about the way that H+ ions are transported across the inner mitochondrial membrane as compared to the movement of other ions like Na+ and Cl- ions?

What percentage of blood oxygen is dissolved in the liquid plasma component?

What drives the rotation of the F1 head of ATP synthase?

The inner boundary membrane is particularly rich in which of the following?

Which of the following is true of peroxisomes?

What is formed when electrons reach the bottom of the mitochondrial electron-transport chain and bind to the final electron acceptor?

Of the five types of electron carriers, which has a component located outside the lipid bilayer?

The gateway to the electron-transport chain _______________

The energy expended during the formation of ATP by ATP synthase is required to _______.

Complex III of the electron-transport chain (ETC)moves electrons from______________ to further down the ETC towards the terminal electron acceptor.

When fusion of mitochondria becomes more frequent than fission, the mitochondria tend to become __________. (Select all correct responses)

The F0 base of ATP synthase serves as ______.

Standard redox potential (E0)for a solution is _____________________

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

What is unusual about the way that H⁺ ions are transported across the inner mitochondrial membrane as compared to the movement of other ions like Na⁺ and Cl^- ions?

What drives the rotation of the F₁ head of ATP synthase?

The F₀ base of ATP synthase serves as ______.

Standard redox potential (E₀)for a solution is _____________________