Question 1

ATP synthase is a good example of a molecular machine that is composed of various protein subunits and that has moving parts.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is most directly responsible for driving ATP synthase and the production of ATP in cellular respiration?

Accepted Answer

A)  The electron transport chain pumping H+ from the mitochondrial matrix into the intermembrane space. 
B)  The flow of electrons down the electron transport chain. 
C)  The loss in free energy that occurs as an electron moves down the transport chain. 
D)  The H+ electrochemical gradient across the inner mitochondria membrane. 
E)  The ability of oxygen to rapidly capture an electron and energize ATP synthase. 
A)  The electron transport chain pumping H+ from the mitochondrial matrix into the intermembrane space. 
B)  The flow of electrons down the electron transport chain. 
C)  The loss in free energy that occurs as an electron moves down the transport chain. 
D)  The H+ electrochemical gradient across the inner mitochondria membrane. 
E)  The ability of oxygen to rapidly capture an electron and energize ATP synthase.

Question 3

Which of the following is TRUE of the citric acid cycle?

Accepted Answer

A)  It yields most of the NAD+ in cell respiration. 
B)  It produces oxygen. 
C)  It yields ATP, NADH, and FADH2 as energy intermediates. 
D)  It occurs on the inner membrane of the mitochondria. 
E)  It produces ATP as the primary energy intermediate. 
A)  It yields most of the NAD+ in cell respiration. 
B)  It produces oxygen. 
C)  It yields ATP, NADH, and FADH2 as energy intermediates. 
D)  It occurs on the inner membrane of the mitochondria. 
E)  It produces ATP as the primary energy intermediate.

Question 4

The ability of bread to rise is mainly a function of the CO2 produced during oxidative phosphorylation rather than that produced from fermentation.

Accepted Answer

A) True 
 B)False

Question 5

Assuming a fat molecule can be oxidized into 2 glycerol molecules, which are immediately converted to glyceraldehyde-3-phosphate, in intermediate glycolysis, how many ATP can be produced from a fat molecule?

Accepted Answer

A)  4 
B)  8 
C)  24 
D)  36 
E)  60 
A)  4 
B)  8 
C)  24 
D)  36 
E)  60

Question 6

Sports physiologists at an Olympic training center wanted to monitor athletes to determine at what point their muscles were functioning anaerobically. They could do this by checking for the buildup of which molecule?

Accepted Answer

A)  ATP 
B)  lactate 
C)  carbon dioxide 
D)  ADP 
E)  oxygen 
A)  ATP 
B)  lactate 
C)  carbon dioxide 
D)  ADP 
E)  oxygen

Question 7

Which pathway shows the correct path of electron transfer from a molecule of FADH2?

Accepted Answer

A)  succinate reductase ? ubiquinone ? cytochrome oxidase ? cytochrome b-c1 ? cytochrome c ? O2 
B)  succinate reductase ? ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? O2 
C)  ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? NADH hydrogenase ? O2 
D)  succinate reductase ? ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? O2. 
E)  ubiquinone ? cytochrome b-c1? cytochrome c ? NADH hydrogenase ? cytochrome oxidase ? O2. 
A)  succinate reductase ? ubiquinone ? cytochrome oxidase ? cytochrome b-c1 ? cytochrome c ? O2 
B)  succinate reductase ? ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? O2 
C)  ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? NADH hydrogenase ? O2 
D)  succinate reductase ? ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? O2. 
E)  ubiquinone ? cytochrome b-c1? cytochrome c ? NADH hydrogenase ? cytochrome oxidase ? O2.

Question 8

Which of the following is NOT considered a secondary metabolite?

Accepted Answer

A)  glucose 
B)  flavonoids 
C)  terpenoids 
D)  alkoloids 
E)  polyketides 
A)  glucose 
B)  flavonoids 
C)  terpenoids 
D)  alkoloids 
E)  polyketides

Exam 7: Cellular Respiration, Fermentation, and Secondary Metabolism

ATP synthase is a good example of a molecular machine that is composed of various protein subunits and that has moving parts.

Which of the following is most directly responsible for driving ATP synthase and the production of ATP in cellular respiration?

Which of the following is TRUE of the citric acid cycle?

The ability of bread to rise is mainly a function of the CO2 produced during oxidative phosphorylation rather than that produced from fermentation.

Assuming a fat molecule can be oxidized into 2 glycerol molecules, which are immediately converted to glyceraldehyde-3-phosphate, in intermediate glycolysis, how many ATP can be produced from a fat molecule?

Sports physiologists at an Olympic training center wanted to monitor athletes to determine at what point their muscles were functioning anaerobically. They could do this by checking for the buildup of which molecule?

Which pathway shows the correct path of electron transfer from a molecule of FADH2?

Which of the following is NOT considered a secondary metabolite?

An Introduction to Biology

The Chemical Basis of Life I: Atoms, Molecules, and Water

The Chemical Basis of Life II: Organic Molecules

General Features of Cells

Membrane Structure, Synthesis, and Transport

An Introduction to Energy, Enzymes, and Metabolism

Photosynthesis

Cell Communication

Multicellularity

Nucleic Acid Structure, DNA Replication, and Chromosome Structure

Gene Expression at the Molecular Level

Gene Regulation

Mutation, DNA Repair, and Cancer

The Eukaryotic Cell Cycle, Mitosis, and Meiosis

Simple Patterns of Inheritance

Complex Patterns of Inheritance

Genetics of Viruses and Bacteria

Developmental Genetics

Genetic Technology

Genomes, Proteomes, and Bioinformatics

The Origin and History of Life

An Introduction to Evolution

Population Genetics

Origin of Species and Macroevolution

Taxonomy and Systematics

Bacteria and Archaea

Protists

Plants and the Conquest of Land

The Evolution and Diversity of Modern Gymnosperms and Angiosperms

Fungi

An Introduction to Animal Diversity

The Invertebrates

The Vertebrates

An Introduction to Flowering Plant Form and Function

Flowering Plants: Behavior

Flowering Plants: Nutrition

Flowering Plants: Transport

Flowering Plants: Reproduction

Introduction to Animal Form and Function

Neuroscience I: Cells of the Nervous System

Neuroscience Ii: Evolution and Function of the Brain and Nervous Systems

Neuroscience Iii: Sensory Systems

The Muscular-Skeletal System and Locomotion

Nutrition, Digestion, and Absorption

Control of Energy Balance, Metabolic Rate, and Body Temperature

Circulatory Systems

Respiratory Systems

Excretory Systems and Salt and Water Balance

Endocrine Systems

Animal Reproduction

Animal Development

Immune Systems

An Introduction to Ecology and Biomes

Behavioral Ecology

Population Ecology

Species Interactions

Community Ecology

Ecosystems Ecology

Biodiversity and Conservation Biology

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The ability of bread to rise is mainly a function of the CO₂ produced during oxidative phosphorylation rather than that produced from fermentation.