Question 1

What evidence suggests that the outer mitochondrial membrane has evolved from the outer membrane that is part of the cell wall of certain bacteria?

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 2

Pathways in which H+ ions can "hop" through a channel by exchanging themselves with other protons present along the pathway are called ___________.

Accepted Answer

A) proton conduction wires 
B) electrical wires 
C) proton pathways 
D) proton conveyer belt 
E) proton conduction pathways and proton wires 
A) proton conduction wires 
B) electrical wires 
C) proton pathways 
D) proton conveyer belt 
E) proton conduction pathways and proton wires

Question 3

On average, how many ATPs would be made if 4 NADH and 6 FADH2 molecules donated their high-energy electrons to the mitochondrial electron-transport chain?

Accepted Answer

A) 10 
B) 24 
C) 12 
D) 30 
E) 20 
A) 10 
B) 24 
C) 12 
D) 30 
E) 20

Question 4

Of the five types of electron carriers, which has the smallest molecular mass?

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 5

In the experiment that demonstrated that rotational catalysis occurs, a fluorescently labeled actin filament attached to the ATP synthase enzyme's ɤ subunit was seen to rotate when ATP was added to the enzyme, which was fixed to a cover slip. With each step in the rotational catalysis, how much could the actin filament be seen to rotate?

Accepted Answer

A) 0° 
B) 360° 
C) 120° 
D) 90° 
E) 3° 
A) 0° 
B) 360° 
C) 120° 
D) 90° 
E) 3°

Question 6

What are the two interconnected domains of the inner mitochondrial membrane?

Accepted Answer

A) inner boundary membrane, cristae 
B) central boundary membrane, cristae 
C) cristae boundary membrane, outer boundary membrane 
D) inner boundary membrane, outer boundary membrane 
E) cristae, matrix 
A) inner boundary membrane, cristae 
B) central boundary membrane, cristae 
C) cristae boundary membrane, outer boundary membrane 
D) inner boundary membrane, outer boundary membrane 
E) cristae, matrix

Question 7

The formation of ATP by the enzymatic transfer of a phosphate group from a donor molecule to ADP is called ________.

Accepted Answer

A) substrate-level phosphorylation 
B) oxidative phosphorylation 
C) cyclic photophosphorylation 
D) noncyclic photophosphorylation 
E) indigenous phosphorylation 
A) substrate-level phosphorylation 
B) oxidative phosphorylation 
C) cyclic photophosphorylation 
D) noncyclic photophosphorylation 
E) indigenous phosphorylation

Question 8

It has been shown that one part of ATP synthase rotates relative to another part of the enzyme, a phenomenon called___________.

Accepted Answer

A) turning catalysis 
B) revolutionary catalysis 
C) rotational catalysis 
D) rotatalysis 
E) revolalysis 
A) turning catalysis 
B) revolutionary catalysis 
C) rotational catalysis 
D) rotatalysis 
E) revolalysis

Question 9

Which of the following is regulated by mitochondria?

Accepted Answer

A) cytosolic levels of chloride ions 
B) intracellular levels of K+ ions 
C) cytosolic levels of Ca2+ ions 
D) process of closure in endocytosis 
A) cytosolic levels of chloride ions 
B) intracellular levels of K+ ions 
C) cytosolic levels of Ca2+ ions 
D) process of closure in endocytosis

Question 10

Which organelle(s)have been found to assist growing plants meet their energy needs? (Select all correct choices)

Accepted Answer

A) mitochondria 
B) glyoxysomes 
C) peroxisomes 
D) chloroplasts 
A) mitochondria 
B) glyoxysomes 
C) peroxisomes 
D) chloroplasts

Question 11

What disease is associated with dysfunctional Complex I activity within mitochondria?

Accepted Answer

A) ragged red fiber disease 
B) compulsive behaviors such as drug addiction 
C) Parkinson's disease 
D) Zellweger's syndrome 
A) ragged red fiber disease 
B) compulsive behaviors such as drug addiction 
C) Parkinson's disease 
D) Zellweger's syndrome

Question 12

Why did dinitrophenol (DNP)kill patients who took the drug to help them lose weight?

Accepted Answer

A) It caused temperatures of the patients to get too high. 
B) It blocked hemoglobin synthesis. 
C) It caused an infection. 
D) It caused total paralysis. 
E) It prevented the patients from breathing. 
A) It caused temperatures of the patients to get too high. 
B) It blocked hemoglobin synthesis. 
C) It caused an infection. 
D) It caused total paralysis. 
E) It prevented the patients from breathing.

Question 13

Which lipid is known for playing an important role in facilitating the activity of proteins involved in ATP synthesis? (Select all correct choices)

Accepted Answer

A) diphosphatidylglycerol 
B) phosphatidyl inositol 
C) phosphatidic acid 
D) cardiolipin 
A) diphosphatidylglycerol 
B) phosphatidyl inositol 
C) phosphatidic acid 
D) cardiolipin

Question 14

Red light is emitted at a wavelength of:

Accepted Answer

A) 900nm 
B) 660nm 
C) 330 nm 
D) 250 nm 
A) 900nm 
B) 660nm 
C) 330 nm 
D) 250 nm

Question 15

Infra-red light is emitted at a wavelength of:

Accepted Answer

A) 900nm 
B) 660nm 
C) 330 nm 
D) 250 nm 
A) 900nm 
B) 660nm 
C) 330 nm 
D) 250 nm

Question 16

In the Clark electrode system, oxygen levels are measured by:

Accepted Answer

A) placing metal strips of platinum and silver in an electrolyte system containing sodium bromide 
B) placing metal strips of platinum and copper in an electrolyte system containing potassium chloride 
C) detecting temperature changes across the electrodes induced by redox reactions 
D) detecting voltage changes when redox reactions involving oxygen, two metals and chloride ions take place. 
A) placing metal strips of platinum and silver in an electrolyte system containing sodium bromide 
B) placing metal strips of platinum and copper in an electrolyte system containing potassium chloride 
C) detecting temperature changes across the electrodes induced by redox reactions 
D) detecting voltage changes when redox reactions involving oxygen, two metals and chloride ions take place.

Question 17

Of the five types of electron carriers, which has the greatest ratio of iron atoms to electrons carried?

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 18

How is the energy used to make ATP via the electron-transport chain generated?

Accepted Answer

A) The energy from electrons bound to reduced coenzymes is used to create a steep electrochemical gradient. 
B) Electrons bound to NADH are used to generate an H+ ion gradient across the inner mitochondrial membrane. 
C) Electrons bound to FADH2 are used to generate a proton gradient across the inner mitochondrial membrane. 
D) Electrons bound to NADH are used to generate a proton gradient across the inner mitochondrial membrane. 
E) All of these are correct. 
A) The energy from electrons bound to reduced coenzymes is used to create a steep electrochemical gradient. 
B) Electrons bound to NADH are used to generate an H+ ion gradient across the inner mitochondrial membrane. 
C) Electrons bound to FADH2 are used to generate a proton gradient across the inner mitochondrial membrane. 
D) Electrons bound to NADH are used to generate a proton gradient across the inner mitochondrial membrane. 
E) All of these are correct.

Question 19

What type of electron carrier has a prosthetic group derived from vitamin B2?

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 20

The energy released by proton movement through ATP synthase ___________.

Accepted Answer

A) directly phosphorylates ADP to ATP 
B) increases the binding affinity of the active site for the ATP product 
C) directly phosphorylates ATP to ADP 
D) decreases the binding affinity of the active site for the ATP product 
E) directly phosphorylates AMP to ATP 
A) directly phosphorylates ADP to ATP 
B) increases the binding affinity of the active site for the ATP product 
C) directly phosphorylates ATP to ADP 
D) decreases the binding affinity of the active site for the ATP product 
E) directly phosphorylates AMP to ATP

What evidence suggests that the outer mitochondrial membrane has evolved from the outer membrane that is part of the cell wall of certain bacteria?

Pathways in which H⁺ ions can "hop" through a channel by exchanging themselves with other protons present along the pathway are called ___________.

On average, how many ATPs would be made if 4 NADH and 6 FADH₂ molecules donated their high-energy electrons to the mitochondrial electron-transport chain?

Of the five types of electron carriers, which has the smallest molecular mass?

What are the two interconnected domains of the inner mitochondrial membrane?

The formation of ATP by the enzymatic transfer of a phosphate group from a donor molecule to ADP is called ________.

It has been shown that one part of ATP synthase rotates relative to another part of the enzyme, a phenomenon called___________.

Which of the following is regulated by mitochondria?

Which organelle(s)have been found to assist growing plants meet their energy needs? (Select all correct choices)

What disease is associated with dysfunctional Complex I activity within mitochondria?

Why did dinitrophenol (DNP)kill patients who took the drug to help them lose weight?

Which lipid is known for playing an important role in facilitating the activity of proteins involved in ATP synthesis? (Select all correct choices)

Red light is emitted at a wavelength of:

Infra-red light is emitted at a wavelength of:

In the Clark electrode system, oxygen levels are measured by:

Of the five types of electron carriers, which has the greatest ratio of iron atoms to electrons carried?

How is the energy used to make ATP via the electron-transport chain generated?

What type of electron carrier has a prosthetic group derived from vitamin B₂?

The energy released by proton movement through ATP synthase ___________.

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 evidence suggests that the outer mitochondrial membrane has evolved from the outer membrane that is part of the cell wall of certain bacteria?

Pathways in which H+ ions can "hop" through a channel by exchanging themselves with other protons present along the pathway are called ___________.

On average, how many ATPs would be made if 4 NADH and 6 FADH2 molecules donated their high-energy electrons to the mitochondrial electron-transport chain?

Of the five types of electron carriers, which has the smallest molecular mass?

What are the two interconnected domains of the inner mitochondrial membrane?

The formation of ATP by the enzymatic transfer of a phosphate group from a donor molecule to ADP is called ________.

It has been shown that one part of ATP synthase rotates relative to another part of the enzyme, a phenomenon called___________.

Which of the following is regulated by mitochondria?

Which organelle(s)have been found to assist growing plants meet their energy needs? (Select all correct choices)

What disease is associated with dysfunctional Complex I activity within mitochondria?

Why did dinitrophenol (DNP)kill patients who took the drug to help them lose weight?

Which lipid is known for playing an important role in facilitating the activity of proteins involved in ATP synthesis? (Select all correct choices)

Red light is emitted at a wavelength of:

Infra-red light is emitted at a wavelength of:

In the Clark electrode system, oxygen levels are measured by:

Of the five types of electron carriers, which has the greatest ratio of iron atoms to electrons carried?

How is the energy used to make ATP via the electron-transport chain generated?

What type of electron carrier has a prosthetic group derived from vitamin B2?

The energy released by proton movement through ATP synthase ___________.

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

Pathways in which H⁺ ions can "hop" through a channel by exchanging themselves with other protons present along the pathway are called ___________.

On average, how many ATPs would be made if 4 NADH and 6 FADH₂ molecules donated their high-energy electrons to the mitochondrial electron-transport chain?

What type of electron carrier has a prosthetic group derived from vitamin B₂?