Question 1

All of the following occur as glucose moves through glycolysis and the Krebs cycle except:

Accepted Answer

A) NAD⁺ is converted to NADH. 
B) CO₂ is released. 
C) actely CoA is removed to form pyruvate. 
D) acetyl CoA enters the Krebs cycle. 
A) NAD⁺ is converted to NADH. 
B) CO₂ is released. 
C) actely CoA is removed to form pyruvate. 
D) acetyl CoA enters the Krebs cycle.

Question 2

Energy is required to link a phosphate group to ADP to make ATP.Where does the energy come from?

Accepted Answer

A) vitamins 
B) enzymes 
C) food we eat 
D) breathing 
A) vitamins 
B) enzymes 
C) food we eat 
D) breathing

Question 3

How many NADH molecules are created during one turn of the Krebs cycle? (Assume the Krebs cycle begins with one acetyl CoA molecule.)

Accepted Answer

A) four 
B) six 
C) one 
D) three 
E) eight 
A) four 
B) six 
C) one 
D) three 
E) eight

Question 4

Oxygen is reduced to water in the cell's:

Accepted Answer

A) nucleus. 
B) mitochondria. 
C) cytoplasm. 
D) Golgi apparatus. 
E) plasma membrane. 
A) nucleus. 
B) mitochondria. 
C) cytoplasm. 
D) Golgi apparatus. 
E) plasma membrane.

Question 5

Glycolysis occurs in the cell's:

Accepted Answer

A) cytosol. 
B) mitochondria. 
C) Golgi apparatus. 
D) plasma membrane. 
E) nucleus. 
A) cytosol. 
B) mitochondria. 
C) Golgi apparatus. 
D) plasma membrane. 
E) nucleus.

Question 6

A molecule that has lost electrons has been reduced.

Accepted Answer

A) True 
 B)False

Question 7

Cyanide is a deadly poison that reacts with hemoglobin in our blood and prevents it from binding oxygen.Cyanide also binds to a molecule in the electron transport chain and blocks the flow of electrons down the chain.Explain why both these mechanisms will stop ATP synthesis.

Accepted Answer

Both mechanisms will stop the functionin

Question 8

What role do hydrogen ions (H⁺)play in the electron transport chain?

Accepted Answer

A) They are pumped across the mitochondrial inner membrane against their concentration gradient (to where their concentration is high); as the H⁺ ions flow back to where their concentration is low, they drive ATP synthase to form ATP. 
B) They are pumped across the mitochondrial inner membrane against their concentration gradient (to where their concentration is low); as the H⁺ ions flow back to where their concentration is high, they drive ATP synthase to form ATP. 
C) They add phosphate groups on ADP to form ATP. 
D) They transfer electrons to the electron transport chain. 
A) They are pumped across the mitochondrial inner membrane against their concentration gradient (to where their concentration is high); as the H⁺ ions flow back to where their concentration is low, they drive ATP synthase to form ATP. 
B) They are pumped across the mitochondrial inner membrane against their concentration gradient (to where their concentration is low); as the H⁺ ions flow back to where their concentration is high, they drive ATP synthase to form ATP. 
C) They add phosphate groups on ADP to form ATP. 
D) They transfer electrons to the electron transport chain.

Question 9

How many pyruvic acid molecules are generated during the oxidation of one glucose molecule during cellular respiration?

Accepted Answer

A) three 
B) two 
C) zero 
D) one 
E) four 
A) three 
B) two 
C) zero 
D) one 
E) four

Question 10

During electron transport,how many ATP molecules are produced per NADH molecule and FADH₂ molecule?

Accepted Answer

A) three per NADH and three per FADH₂ 
B) two per NADH and two per FADH₂ 
C) three per NADH and two per FADH₂ 
D) two per NADH and three per FADH₂ 
A) three per NADH and three per FADH₂ 
B) two per NADH and two per FADH₂ 
C) three per NADH and two per FADH₂ 
D) two per NADH and three per FADH₂

Question 11

The enzymes used by the electron transport chain are located:

Accepted Answer

A) in the cytosol. 
B) in the outer membrane of the mitochondrion. 
C) in the inner membrane of the mitochondrion. 
D) between the inner and outer membranes of the mitochondrion. 
A) in the cytosol. 
B) in the outer membrane of the mitochondrion. 
C) in the inner membrane of the mitochondrion. 
D) between the inner and outer membranes of the mitochondrion.

Question 12

When fats are metabolized by aerobic respiration,they are first split into ________ and ________ molecules.

Accepted Answer

fatty acid

Question 13

Proteins are not oxidized by aerobic respiration.

Accepted Answer

A) True 
 B)False

Question 14

Certain drugs prevent the formation of a hydrogen ion gradient across the inner mitochondrial membrane.What is the most likely consequence?

Accepted Answer

A) Most ATP production will stop, and the cell will die. 
B) ATP production will increase. 
C) Glycolysis will stop. 
D) Fermentation will stop. 
A) Most ATP production will stop, and the cell will die. 
B) ATP production will increase. 
C) Glycolysis will stop. 
D) Fermentation will stop.

Exam 7: Vital Harvest: Deriving Energy From Food

All of the following occur as glucose moves through glycolysis and the Krebs cycle except:

Energy is required to link a phosphate group to ADP to make ATP.Where does the energy come from?

How many NADH molecules are created during one turn of the Krebs cycle? (Assume the Krebs cycle begins with one acetyl CoA molecule.)

Oxygen is reduced to water in the cell's:

Glycolysis occurs in the cell's:

A molecule that has lost electrons has been reduced.

Cyanide is a deadly poison that reacts with hemoglobin in our blood and prevents it from binding oxygen.Cyanide also binds to a molecule in the electron transport chain and blocks the flow of electrons down the chain.Explain why both these mechanisms will stop ATP synthesis.

What role do hydrogen ions (H⁺)play in the electron transport chain?

How many pyruvic acid molecules are generated during the oxidation of one glucose molecule during cellular respiration?

During electron transport,how many ATP molecules are produced per NADH molecule and FADH₂ molecule?

The enzymes used by the electron transport chain are located:

When fats are metabolized by aerobic respiration,they are first split into ________ and ________ molecules.

Proteins are not oxidized by aerobic respiration.

Certain drugs prevent the formation of a hydrogen ion gradient across the inner mitochondrial membrane.What is the most likely consequence?

Science As a Way of Learning: a Guide to the Natural World

Fundamental Building Blocks: Chemistry, water, and Ph

Lifes Components: Biological Molecules

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Lifes Mainspring: an Introduction to Energy

The Green Worlds Gift: Photosynthesis

The Links in Lifes Chain: Genetics and Cell Division

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

Passing on Lifes Information: Dna Structure and Replication

How Proteins Are Made: Genetic Transcription, translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late,traveling Far: the Evolution of Human Beings

Viruses,bacteria,archaea,and Protists: the Diversity of Life 1

Fungi: the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

How the Baby Came to Be: Human Reproduction

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

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When fats are metabolized by aerobic respiration,they are first split into and molecules.