Question 1

In the case of the Fo complex,the "o" refers to the antibiotic ________,to which the structure is sensitive.

Accepted Answer

The answer of In the case of the Fo complex,the...

Question 2

Of the following sequences,which shows the correct molecules through which electrons flow when delivered to the electron transport system by NADH?

Accepted Answer

A) complex I, cytochrome c, complex III, coenzyme Q, complex IV, oxygen 
B) complex I, coenzyme Q, complex III, complex IV, oxygen 
C) complex I, coenzyme Q, complex IV, cytochrome c, oxygen 
D) complex I, coenzyme Q, complex III, cytochrome c, complex IV, oxygen 
E) complex II, coenzyme Q, complex III, complex IV, oxygen 
A) complex I, cytochrome c, complex III, coenzyme Q, complex IV, oxygen 
B) complex I, coenzyme Q, complex III, complex IV, oxygen 
C) complex I, coenzyme Q, complex IV, cytochrome c, oxygen 
D) complex I, coenzyme Q, complex III, cytochrome c, complex IV, oxygen 
E) complex II, coenzyme Q, complex III, complex IV, oxygen

Question 3

________ (FAD)is a molecule similar to NAD⁺ in function,but it is a lower-energy coenzyme.

Accepted Answer

Flavin ade

Question 4

The sequential process of fatty acid catabolism to acetyl CoA is called

Accepted Answer

A) hydrogenation. 
B) oxidative phosphorylation. 
C) β-oxidation. 
D) the glyoxylate cycle. 
E) the Cori cycle. 
A) hydrogenation. 
B) oxidative phosphorylation. 
C) β-oxidation. 
D) the glyoxylate cycle. 
E) the Cori cycle.

Question 5

The overall efficiency of aerobic respiration in eukaryotes is about

Accepted Answer

A) 10%. 
B) 25%. 
C) 55%. 
D) 75%. 
E) 100%. 
A) 10%. 
B) 25%. 
C) 55%. 
D) 75%. 
E) 100%.

Question 6

β-oxidation

Accepted Answer

A) is the second step in the oxidation of glucose. 
B) is a process used to oxidize fatty acids. 
C) occurs in the cytoplasm. 
D) is a process used to digest some polysaccharides. 
E) both choices B and C 
A) is the second step in the oxidation of glucose. 
B) is a process used to oxidize fatty acids. 
C) occurs in the cytoplasm. 
D) is a process used to digest some polysaccharides. 
E) both choices B and C

Question 7

NADH concentrations serve to regulate oxidative decarboxylation and the TCA cycle.Which of the following enzymes is not regulated by NADH?

Accepted Answer

A) pyruvate dehydrogenase 
B) isocitrate dehydrogenase 
C) α-ketoglutarate dehydrogenase 
D) malate dehydrogenase 
E) succinate dehydrogenase 
A) pyruvate dehydrogenase 
B) isocitrate dehydrogenase 
C) α-ketoglutarate dehydrogenase 
D) malate dehydrogenase 
E) succinate dehydrogenase

Question 8

In prokaryotes,aerobic respiration generates ________ ATP molecules.

Accepted Answer

A) 2 
B) 15 
C) 38 
D) 42 
E) 0 
A) 2 
B) 15 
C) 38 
D) 42 
E) 0

Question 9

ATP synthesis that involves phosphorylation events linked to oxygen-dependent electron transport is called ________.

Accepted Answer

oxidative

Question 10

Which of the following is not one of the major transport systems of the inner mitochondrial membrane?

Accepted Answer

A) sodium-potassium pump 
B) dicarboxylate carriers 
C) tricarboxylate carriers 
D) pyruvate carrier cotransport 
E) ATP-ADP carrier exchange 
A) sodium-potassium pump 
B) dicarboxylate carriers 
C) tricarboxylate carriers 
D) pyruvate carrier cotransport 
E) ATP-ADP carrier exchange

Question 11

Why are mitochondria so prevalent in skeletal muscle?

Accepted Answer

A) They give the muscle enough elasticity to contract. 
B) They are needed to repair damaged tissue that accumulates during exercise. 
C) They are needed to provide energy for muscle contraction. 
D) Bones and muscles require a great deal of energy to prevent them from separating. 
E) The flow of blood is greatest in skeletal muscle. 
A) They give the muscle enough elasticity to contract. 
B) They are needed to repair damaged tissue that accumulates during exercise. 
C) They are needed to provide energy for muscle contraction. 
D) Bones and muscles require a great deal of energy to prevent them from separating. 
E) The flow of blood is greatest in skeletal muscle.

Question 12

In electron transport,which respiratory complex is not involved in the flow of electrons from FADH₂?

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 13

________ is the oxidation-driven flow of electrons,through or within a membrane,from reduced coenzymes to an electron acceptor.It is usually accompanied by the generation of ATP.

Accepted Answer

Cellular r

Question 14

Explain how fatty acids are activated in the cytoplasm and ultimately transported into the mitochondrion to be oxidized.Why would the use of carnitine be an advantage for this process?

Accepted Answer

Fatty acids are activated by adding CoA

Question 15

Pyruvate dehydrogenase is regulated by all of the following except

Accepted Answer

A) NADH. 
B) ATP. 
C) AMP. 
D) acetyl CoA. 
E) CO₂. 
A) NADH. 
B) ATP. 
C) AMP. 
D) acetyl CoA. 
E) CO₂.

Question 16

As pyruvate is prepared for the TCA cycle,it undergoes a process of

Accepted Answer

A) reductive carboxylation. 
B) oxidative decarboxylation. 
C) oxidative carboxylation. 
D) reductive decarboxylation. 
E) CoQ reproduction. 
A) reductive carboxylation. 
B) oxidative decarboxylation. 
C) oxidative carboxylation. 
D) reductive decarboxylation. 
E) CoQ reproduction.

Question 17

Which of the following would not be used as a final electron acceptor in anaerobic respiration?

Accepted Answer

A) oxygen 
B) sulfur 
C) protons 
D) iron 
E) nitrogen 
A) oxygen 
B) sulfur 
C) protons 
D) iron 
E) nitrogen

Question 18

Match between columns
                        Premises: glycolysis
electron transport
phospholipid synthesis
nucleotide phosphorylation
TCA cycle

Accepted Answer

The Answer of ribosome and porins and nucleolus and intermembrane is...

Question 19

Of the carrier molecules in the electron transport chain,which has heme as part of its prosthetic group?

Accepted Answer

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

Question 20

The TCA cycle and glyoxylate cycle are similar in many respects.Which of the following statements accurately describes these cycles?

Accepted Answer

A) Both cycles are catabolic in function. 
B) The glyoxylate cycle has only a single decarboxylating reaction. 
C) In the glyoxylate cycle, two acetyl CoA molecules are used to generate succinate. 
D) The glyoxylate cycle is used by some organisms to synthesize proteins. 
E) The TCA and glyoxylate cycles both occur in the mitochondrion. 
A) Both cycles are catabolic in function. 
B) The glyoxylate cycle has only a single decarboxylating reaction. 
C) In the glyoxylate cycle, two acetyl CoA molecules are used to generate succinate. 
D) The glyoxylate cycle is used by some organisms to synthesize proteins. 
E) The TCA and glyoxylate cycles both occur in the mitochondrion.

Exam 10: Chemotrophic Energy Metabolism: Aerobic Respiration

In the case of the Fo complex,the "o" refers to the antibiotic ________,to which the structure is sensitive.

Of the following sequences,which shows the correct molecules through which electrons flow when delivered to the electron transport system by NADH?

________ (FAD)is a molecule similar to NAD⁺ in function,but it is a lower-energy coenzyme.

The sequential process of fatty acid catabolism to acetyl CoA is called

The overall efficiency of aerobic respiration in eukaryotes is about

β-oxidation

NADH concentrations serve to regulate oxidative decarboxylation and the TCA cycle.Which of the following enzymes is not regulated by NADH?

In prokaryotes,aerobic respiration generates ________ ATP molecules.

ATP synthesis that involves phosphorylation events linked to oxygen-dependent electron transport is called ________.

Which of the following is not one of the major transport systems of the inner mitochondrial membrane?

Why are mitochondria so prevalent in skeletal muscle?

In electron transport,which respiratory complex is not involved in the flow of electrons from FADH₂?

________ is the oxidation-driven flow of electrons,through or within a membrane,from reduced coenzymes to an electron acceptor.It is usually accompanied by the generation of ATP.

Explain how fatty acids are activated in the cytoplasm and ultimately transported into the mitochondrion to be oxidized.Why would the use of carnitine be an advantage for this process?

Pyruvate dehydrogenase is regulated by all of the following except

As pyruvate is prepared for the TCA cycle,it undergoes a process of

Which of the following would not be used as a final electron acceptor in anaerobic respiration?

Of the carrier molecules in the electron transport chain,which has heme as part of its prosthetic group?

The TCA cycle and glyoxylate cycle are similar in many respects.Which of the following statements accurately describes these cycles?

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

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