Question 1

Which of the following processes is associated with the outer mitochondrial membrane?

Accepted Answer

A) phospholipid synthesis 
B) metabolite transport 
C) β-oxidation of fats 
D) transcription 
E) ATP synthesis 
A) phospholipid synthesis 
B) metabolite transport 
C) β-oxidation of fats 
D) transcription 
E) ATP synthesis

Question 2

Which of the following structures serves the same purpose as the inner membrane and matrix of the mitochondrion with regard to their roles in aerobic respiration?

Accepted Answer

A) ribosomes 
B) cell membrane 
C) cytoplasm 
D) nuceloid 
E) both choices B and C 
A) ribosomes 
B) cell membrane 
C) cytoplasm 
D) nuceloid 
E) both choices B and C

Question 3

The chemiosmotic model of ATP synthesis is based on several lines of experimental evidence.Which of the following statements is not correct experimental evidence to support the chemiosmotic model?

Accepted Answer

A) Artificial proton gradients established by addition of acid can drive ATP synthesis in the absence of electron transport. 
B) Oxidative phosphorylation does not require a membrane-enclosed compartment. 
C) Electron transport causes protons to be pumped out of the mitochondrial matrix. 
D) The proton gradient established by electron transport has enough energy to drive ATP synthesis. 
E) Uncoupling agents abolish both the proton gradient and ATP synthesis. 
A) Artificial proton gradients established by addition of acid can drive ATP synthesis in the absence of electron transport. 
B) Oxidative phosphorylation does not require a membrane-enclosed compartment. 
C) Electron transport causes protons to be pumped out of the mitochondrial matrix. 
D) The proton gradient established by electron transport has enough energy to drive ATP synthesis. 
E) Uncoupling agents abolish both the proton gradient and ATP synthesis.

Question 4

The outer membrane of the mitochondrion is not a significant permeability barrier because it contains transmembrane proteins called ________.

Accepted Answer

The answer of The outer membrane of the mitochondrion is...

Question 5

When utilizing fats as an energy source,the glycerol portion enters the ________ when it has been converted to ________.

Accepted Answer

A) TCA cycle; pyruvate 
B) glycolysis; fructose-6-phosphate 
C) TCA cycle; acetyl CoA 
D) electron transport system; CoQ 
E) glycolysis; dihydroxyacetone phosphate 
A) TCA cycle; pyruvate 
B) glycolysis; fructose-6-phosphate 
C) TCA cycle; acetyl CoA 
D) electron transport system; CoQ 
E) glycolysis; dihydroxyacetone phosphate

Question 6

Crista junctions

Accepted Answer

A) are large pores. 
B) are associated with the movement of materials from the cytosol into the mitochondrion. 
C) contain the mitochondrial DNA. 
D) are associated with the thylakoid membrane system. 
E) limit the movement of products between the intracristae and intermembrane spaces. 
A) are large pores. 
B) are associated with the movement of materials from the cytosol into the mitochondrion. 
C) contain the mitochondrial DNA. 
D) are associated with the thylakoid membrane system. 
E) limit the movement of products between the intracristae and intermembrane spaces.

Question 7

Because the TCA cycle is associated with degradation and synthesis,the pathway is said to be

Accepted Answer

A) anabolic. 
B) amphibolic. 
C) catabolic. 
D) bipolar. 
E) amphipathic. 
A) anabolic. 
B) amphibolic. 
C) catabolic. 
D) bipolar. 
E) amphipathic.

Question 8

In electron transport,which respiratory complex is not involved in the flow of electrons from NADH?

Accepted Answer

A) complex I 
B) complex II 
C) complex III 
D) complex IV 
E) all of the above 
A) complex I 
B) complex II 
C) complex III 
D) complex IV 
E) all of the above

Question 9

The site of DNA replication is localized to the ________ within the mitochondrion.

Accepted Answer

The answer of The site of DNA replication is localized...

Question 10

Which of the numbered respiratory complexes is not correctly paired with its name?

Accepted Answer

A) complex I: NADH dehydrogenase complex 
B) complex II: succinate-coenzyme Q oxidoreductase complex 
C) complex III: coenzyme Q-cytochrome c oxidoreductase complex 
D) complex IV: cytochrome c reductase complex 
E) none of the above 
A) complex I: NADH dehydrogenase complex 
B) complex II: succinate-coenzyme Q oxidoreductase complex 
C) complex III: coenzyme Q-cytochrome c oxidoreductase complex 
D) complex IV: cytochrome c reductase complex 
E) none of the above

Question 11

Calculate the standard free energy change (ΔG°)associated with the transfer of electrons from NADH and O2 using the following equation:
O2 + 2 NADH + 2H+ = 2 H20 + 2 NAD+
The half equations are : O2 + 4H + 4e- → 2H2O, E0' = 0.82V; NAD + H + 2e- → NADH, E0' = -0.32V

Accepted Answer

ΔG° = -nFΔ

Question 12

Respiration includes glycolysis,the ________,electron transport,and ________.

Accepted Answer

TCA cycle;

Question 13

Which molecule 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 14

The synthesis of ATP as a result of the electron transport system is dependent on the delivery of electrons and hydrogen ions by NADH and FADH₂ to the inner membrane of the mitochondria in eukaryotic cells or the cell membrane of prokaryotic cells.For each of the situations below,give the maximum number of ATP generated.
a.one molecule of FADH₂ produced during the TCA cycle
b.one molecule of NADH produced during the TCA cycle
c.one molecule of NADH produced by glycolysis in a muscle cell that has a very low cytoplasmic level of NADH
d.one molecule of NADH produced by glycolysis in a liver cell using the malate-aspartate shuttle
e.one molecule of FADH2 produced during the TCA cycle in a prokaryotic cell
f.one molecule of NADH produced by glycolysis in a prokaryotic cell

Accepted Answer

a.2
b.3
c.

Question 15

Of the following electron carriers of the electron transport system,which transfers protons in addition to 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 16

Which of the following molecules is not a carrier of electrons in the electron transport system (ETS)?

Accepted Answer

A) flavoproteins 
B) copper-nickel compounds 
C) cytochromes 
D) iron-sulfur proteins 
E) coenzyme Q 
A) flavoproteins 
B) copper-nickel compounds 
C) cytochromes 
D) iron-sulfur proteins 
E) coenzyme Q

Question 17

According to your text,in which of the following steps of the TCA cycle is NADH/FADH₂ not produced?

Accepted Answer

A) TCA-2 
B) TCA-3 
C) TCA-4 
D) TCA-6 
E) TCA-8 
A) TCA-2 
B) TCA-3 
C) TCA-4 
D) TCA-6 
E) TCA-8

Question 18

The reduction of NAD⁺ to NADH (and H⁺)occurs both in the ________ and in the ________ of the ________.

Accepted Answer

cytoplasm;

Question 19

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

Question 20

While electron transport is occurring,the development of a(n)________ is established by the directional pumping of protons across the inner membrane of the mitochondrion.

Accepted Answer

electroche

Exam 10: Chemotrophic Energy Metabolism: Aerobic Respiration

Which of the following processes is associated with the outer mitochondrial membrane?

Which of the following structures serves the same purpose as the inner membrane and matrix of the mitochondrion with regard to their roles in aerobic respiration?

The chemiosmotic model of ATP synthesis is based on several lines of experimental evidence.Which of the following statements is not correct experimental evidence to support the chemiosmotic model?

The outer membrane of the mitochondrion is not a significant permeability barrier because it contains transmembrane proteins called ________.

When utilizing fats as an energy source,the glycerol portion enters the ________ when it has been converted to ________.

Crista junctions

Because the TCA cycle is associated with degradation and synthesis,the pathway is said to be

In electron transport,which respiratory complex is not involved in the flow of electrons from NADH?

The site of DNA replication is localized to the ________ within the mitochondrion.

Which of the numbered respiratory complexes is not correctly paired with its name?

Calculate the standard free energy change (ΔG°)associated with the transfer of electrons from NADH and O2 using the following equation: O2 + 2 NADH + 2H+ = 2 H20 + 2 NAD+ The half equations are : O2 + 4H + 4e- → 2H2O, E0' = 0.82V; NAD + H + 2e- → NADH, E0' = -0.32V

Respiration includes glycolysis,the ________,electron transport,and ________.

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

Of the following electron carriers of the electron transport system,which transfers protons in addition to electrons?

Which of the following molecules is not a carrier of electrons in the electron transport system (ETS)?

According to your text,in which of the following steps of the TCA cycle is NADH/FADH₂ not produced?

The reduction of NAD⁺ to NADH (and H⁺)occurs both in the ________ and in the ________ of the ________.

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

While electron transport is occurring,the development of a(n)________ is established by the directional pumping of protons across the inner membrane of the mitochondrion.

A Preview of the Cell

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 and Peroxisomes

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

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

The Cell Cycle, DNA Replication, and Mitosis

Sexual Reproduction, meiosis, and Genetic Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

Filters

When utilizing fats as an energy source,the glycerol portion enters the when it has been converted to .

Calculate the standard free energy change (ΔG°)associated with the transfer of electrons from NADH and O2 using the following equation: O2 + 2 NADH + 2H+ = 2 H₂0 + 2 NAD+ The half equations are : O₂ + 4H + 4e- → 2H₂O, E0' = 0.82V; NAD + H + 2e- → NADH, E0' = -0.32V

Respiration includes glycolysis,the ,electron transport,and .

The reduction of NAD⁺ to NADH (and H⁺)occurs both in the and in the of the .