Question 1

Complex IV of the electron and H+ transport chain is also known as which of the following?

Accepted Answer

A)  cytochrome oxidase 
B)  cytochrome reductase 
C)  ubiquinone 
D)  none of these 
A)  cytochrome oxidase 
B)  cytochrome reductase 
C)  ubiquinone 
D)  none of these

Question 2

Which of the following correctly describes the composition of FAD?

Accepted Answer

A)  adenine, flavin, a ribose and a ribitol linked by a diphosphate 
B)  adenine, flavin, and two ribose molecules linked by a diphosphate 
C)  adenine, flavin, and two ribose molecules linked by a triphosphate 
D)  adenine, flavin, and two ribitol molecules linked by a diphosphate 
A)  adenine, flavin, a ribose and a ribitol linked by a diphosphate 
B)  adenine, flavin, and two ribose molecules linked by a diphosphate 
C)  adenine, flavin, and two ribose molecules linked by a triphosphate 
D)  adenine, flavin, and two ribitol molecules linked by a diphosphate

Question 3

Which of the following is poorest for storing or releasing energy?

Accepted Answer

A)  ADP 
B)  AMP 
C)  ATP 
D)  None, they are all equally good. 
A)  ADP 
B)  AMP 
C)  ATP 
D)  None, they are all equally good.

Question 4

How many molecules of ATP are produced for each molecule of O2 consumed during oxidative phosphorylation?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8 
A)  2 
B)  4 
C)  6 
D)  8

Question 5

When considering both electron and H+ transport and the chemiosmotic pump, which of the following is the correct sequence of energy transformations?

Accepted Answer

A)  chemical → electrical → mechanical 
B)  chemical → mechanical → electrical 
C)  electrical → chemical → mechanical 
D)  electrical → mechanical → chemical 
A)  chemical → electrical → mechanical 
B)  chemical → mechanical → electrical 
C)  electrical → chemical → mechanical 
D)  electrical → mechanical → chemical

Question 6

In what form is hydrogen transported by the NAD+/NADH system?

Accepted Answer

A)  H 
B)  H+ 
C)  H2 
D)  H2O 
A)  H 
B)  H+ 
C)  H2 
D)  H2O

Question 7

Which of the following correctly describes citrate and isocitrate?

Accepted Answer

A)  They are both secondary alcohols. 
B)  They are both tertiary alcohols. 
C)  Citrate is a secondary alcohol, but isocitrate is a tertiary alcohol. 
D)  Citrate is a tertiary alcohol, but isocitrate is a secondary alcohol. 
A)  They are both secondary alcohols. 
B)  They are both tertiary alcohols. 
C)  Citrate is a secondary alcohol, but isocitrate is a tertiary alcohol. 
D)  Citrate is a tertiary alcohol, but isocitrate is a secondary alcohol.

Question 8

How many different complexes are involved in the electron and H+ transport chain?

Accepted Answer

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

Question 9

Some of the energy produced by the reaction of NADH and CoQ is used to do which of the following?

Accepted Answer

A)  transport e− from the intermembrane space to the matrix 
B)  transport e− from the matrix to the intermembrane space 
C)  transport H+ from the intermembrane space to the matrix 
D)  transport H+ from the matrix to the intermembrane space 
A)  transport e− from the intermembrane space to the matrix 
B)  transport e− from the matrix to the intermembrane space 
C)  transport H+ from the intermembrane space to the matrix 
D)  transport H+ from the matrix to the intermembrane space

Question 10

Which of the following correctly describe actin and myosin?

Accepted Answer

A)  They are the thick filaments 
B)  They are both thin filaments 
C)  Actin is a thick filament and myosin is a thin filament 
D)  Actin is a thin filament and myosin is a thick filament 
A)  They are the thick filaments 
B)  They are both thin filaments 
C)  Actin is a thick filament and myosin is a thin filament 
D)  Actin is a thin filament and myosin is a thick filament

Question 11

Approximately how much ATP does a human manufacture and degrade in a day?

Accepted Answer

A)  10 kg 
B)  20 kg 
C)  40 kg 
D)  80 kg 
A)  10 kg 
B)  20 kg 
C)  40 kg 
D)  80 kg

Question 12

The binding of ATP to myosin results in which of the following?

Accepted Answer

A)  dissociation of the actin-myosin complex and muscle contraction 
B)  dissociation of the actin-myosin complex and muscle relaxation 
C)  formation of the actin-myosin complex and muscle contraction 
D)  formation of the actin-myosin complex and muscle relaxation 
A)  dissociation of the actin-myosin complex and muscle contraction 
B)  dissociation of the actin-myosin complex and muscle relaxation 
C)  formation of the actin-myosin complex and muscle contraction 
D)  formation of the actin-myosin complex and muscle relaxation

Question 13

Which of the following correctly describes electron flow in complex IV?

Accepted Answer

A)  cytochrome a → cytochrome b → cytochrome c 
B)  cytochrome a → cytochrome a3 → cytochrome c 
C)  cytochrome a3 → cytochrome a → cytochrome c 
D)  cytochrome c → cytochrome a → cytochrome a3 
A)  cytochrome a → cytochrome b → cytochrome c 
B)  cytochrome a → cytochrome a3 → cytochrome c 
C)  cytochrome a3 → cytochrome a → cytochrome c 
D)  cytochrome c → cytochrome a → cytochrome a3

Question 14

How many subunits make up complex IV of the electron and H+ transport chain?

Accepted Answer

A)  6 
B)  11 
C)  13 
D)  21 
A)  6 
B)  11 
C)  13 
D)  21

Question 15

Approximately how much energy is released by the hydrolysis of one mole of AMP?

Accepted Answer

A)  3.4 kcal 
B)  7.3 kcal 
C)  10.7 kcal 
D)  18 kcal 
A)  3.4 kcal 
B)  7.3 kcal 
C)  10.7 kcal 
D)  18 kcal

Question 16

Where in the cell are the enzymes that catalyze the common metabolic pathway synthesized?

Accepted Answer

A)  in the cytosol 
B)  in the Golgi bodies 
C)  in the mitochondria 
D)  in the nucleus 
A)  in the cytosol 
B)  in the Golgi bodies 
C)  in the mitochondria 
D)  in the nucleus

Question 17

Pantothenic acid forms which of the following linkages when it is part of CoA?

Accepted Answer

A)  an ester linkage to diphosphate and an amide linkage to ethylamine 
B)  an ester linkage to diphosphate and an amide linkage to diethylamine 
C)  an ester linkage to diphosphate and an amide linkage to mercapto- ethylamine 
D)  an ester linkage to diphosphate and an amide linkage to triethylamine 
A)  an ester linkage to diphosphate and an amide linkage to ethylamine 
B)  an ester linkage to diphosphate and an amide linkage to diethylamine 
C)  an ester linkage to diphosphate and an amide linkage to mercapto- ethylamine 
D)  an ester linkage to diphosphate and an amide linkage to triethylamine

Question 18

How many molecules of O2 are consumed for each C2 fragment which enters the common catabolic pathway?

Accepted Answer

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

Question 19

Which of the following stimulates the enzyme isocitrate dehydrogenase?

Accepted Answer

A)  ATP and NADH + H+ 
B)  ADP and NAD+ 
C)  acetyl CoA 
D)  none of these 
A)  ATP and NADH + H+ 
B)  ADP and NAD+ 
C)  acetyl CoA 
D)  none of these

Question 20

Which of the following correctly describes the composition of NAD+?

Accepted Answer

A)  adenine, nicotinamide, a ribose and a ribitol linked by a diphosphate 
B)  adenine, nicotinamide, and two ribose molecules linked by a diphosphate 
C)  adenine, nicotinamide, and two ribose molecules linked by a triphosphate 
D)  adenine, nicotinamide, and two ribitol molecules linked by a diphosphate 
A)  adenine, nicotinamide, a ribose and a ribitol linked by a diphosphate 
B)  adenine, nicotinamide, and two ribose molecules linked by a diphosphate 
C)  adenine, nicotinamide, and two ribose molecules linked by a triphosphate 
D)  adenine, nicotinamide, and two ribitol molecules linked by a diphosphate

Exam 27: Bioenergetics: How the Body Converts Food to Energy

Complex IV of the electron and H+ transport chain is also known as which of the following?

Which of the following correctly describes the composition of FAD?

Which of the following is poorest for storing or releasing energy?

How many molecules of ATP are produced for each molecule of O2 consumed during oxidative phosphorylation?

When considering both electron and H+ transport and the chemiosmotic pump, which of the following is the correct sequence of energy transformations?

In what form is hydrogen transported by the NAD+/NADH system?

Which of the following correctly describes citrate and isocitrate?

How many different complexes are involved in the electron and H+ transport chain?

Some of the energy produced by the reaction of NADH and CoQ is used to do which of the following?

Which of the following correctly describe actin and myosin?

Approximately how much ATP does a human manufacture and degrade in a day?

The binding of ATP to myosin results in which of the following?

Which of the following correctly describes electron flow in complex IV?

How many subunits make up complex IV of the electron and H+ transport chain?

Approximately how much energy is released by the hydrolysis of one mole of AMP?

Where in the cell are the enzymes that catalyze the common metabolic pathway synthesized?

Pantothenic acid forms which of the following linkages when it is part of CoA?

How many molecules of O2 are consumed for each C2 fragment which enters the common catabolic pathway?

Which of the following stimulates the enzyme isocitrate dehydrogenase?

Which of the following correctly describes the composition of NAD+?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes and Alkynes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

Complex IV of the electron and H⁺ transport chain is also known as which of the following?

How many molecules of ATP are produced for each molecule of O₂ consumed during oxidative phosphorylation?

When considering both electron and H⁺ transport and the chemiosmotic pump, which of the following is the correct sequence of energy transformations?

In what form is hydrogen transported by the NAD⁺/NADH system?

How many different complexes are involved in the electron and H⁺ transport chain?

How many subunits make up complex IV of the electron and H⁺ transport chain?

How many molecules of O₂ are consumed for each C₂ fragment which enters the common catabolic pathway?

Which of the following correctly describes the composition of NAD⁺?