Question 1

How does one account for the bubbles in a glass of beer or champagne?

Accepted Answer

A)  Lactate fermentation accounts for the bubbles. 
B)  Bubbles of CO2 were formed by the yeast cells during glycolysis. 
C)  Bubbles of CO2 were produced by yeast during anaerobic metabolism and were trapped in the bottle. 
D)  The bubbles are simply air bubbles resulting from the brewing process. 
E)  Bubbles of CO2, produced by aerobic respiration in yeast cells, were trapped in the beverage at bottling. 
A)  Lactate fermentation accounts for the bubbles. 
B)  Bubbles of CO2 were formed by the yeast cells during glycolysis. 
C)  Bubbles of CO2 were produced by yeast during anaerobic metabolism and were trapped in the bottle. 
D)  The bubbles are simply air bubbles resulting from the brewing process. 
E)  Bubbles of CO2, produced by aerobic respiration in yeast cells, were trapped in the beverage at bottling.

Question 2

Which of the following processes occurs in the cytoplasm?

Accepted Answer

A)  Glycolysis 
B)  The Krebs cycle 
C)  The ETC 
A)  Glycolysis 
B)  The Krebs cycle 
C)  The ETC

Question 3

Briefly describe the three main steps of aerobic glucose metabolism.

Accepted Answer

(1) Glycolysis (glucose converted to pyr

Question 4

End products of the different fermentation processes include all of the following EXCEPT

Accepted Answer

A)  carbon dioxide. 
B)  water. 
C)  ethanol. 
D)  lactate. 
A)  carbon dioxide. 
B)  water. 
C)  ethanol. 
D)  lactate.

Question 5

In human muscle cells, fermentation (by itself) produces

Accepted Answer

A)  water. 
B)  adenosine triphosphate. 
C)  lactate. 
D)  pyruvate. 
A)  water. 
B)  adenosine triphosphate. 
C)  lactate. 
D)  pyruvate.

Question 6

The overall products of glycolysis are

Accepted Answer

A)  ATP, NADH, and acetyl CoA. 
B)  ATP and pyruvate only. 
C)  ATP, NADH, FADH2, and CO2. 
D)  ATP, NADH, pyruvate, and FADH2. 
E)  ATP, NADH, and pyruvate. 
A)  ATP, NADH, and acetyl CoA. 
B)  ATP and pyruvate only. 
C)  ATP, NADH, FADH2, and CO2. 
D)  ATP, NADH, pyruvate, and FADH2. 
E)  ATP, NADH, and pyruvate.

Question 7

What is the final electron acceptor in cellular respiration?

Accepted Answer

A)  NADH 
B)  FADH2 
C)  ATP 
D)  Oxygen 
E)  Carbon dioxide 
A)  NADH 
B)  FADH2 
C)  ATP 
D)  Oxygen 
E)  Carbon dioxide

Question 8

Where does the production of pyruvate occur during glycolysis?

Accepted Answer

A)  Intermembrane compartment 
B)  Inner membrane 
C)  Ribosomes 
D)  Mitochondrial matrix 
E)  Cytoplasmic fluid 
A)  Intermembrane compartment 
B)  Inner membrane 
C)  Ribosomes 
D)  Mitochondrial matrix 
E)  Cytoplasmic fluid

Question 9

Which of the following processes occurs across the mitochondrial membrane?

Accepted Answer

A)  Glycolysis 
B)  The Krebs cycle 
C)  The ETC 
A)  Glycolysis 
B)  The Krebs cycle 
C)  The ETC

Question 10

Which kind of metabolic poison would interfere with the glycolysis stage of cellular respiration?

Accepted Answer

A)  An agent that binds to lactate and inactivates it 
B)  An agent that reacts with FADH2 and oxidizes FAD+ 
C)  An agent that inhibits the formation of acetyl CoA 
D)  An agent that reacts with oxygen and depletes its concentration in the cell 
E)  An agent that closely mimics the structure of glucose but is not capable of being metabolized and broken down 
A)  An agent that binds to lactate and inactivates it 
B)  An agent that reacts with FADH2 and oxidizes FAD+ 
C)  An agent that inhibits the formation of acetyl CoA 
D)  An agent that reacts with oxygen and depletes its concentration in the cell 
E)  An agent that closely mimics the structure of glucose but is not capable of being metabolized and broken down

Question 11

The products of the Krebs cycle include

Accepted Answer

A)  carbon dioxide only. 
B)  ATP, carbon dioxide, and energy carriers. 
C)  energy carriers only. 
D)  carbon dioxide and energy carriers only. 
E)  ATP only. 
A)  carbon dioxide only. 
B)  ATP, carbon dioxide, and energy carriers. 
C)  energy carriers only. 
D)  carbon dioxide and energy carriers only. 
E)  ATP only.

Question 12

Respiration rates are measured by the amount of oxygen per gram of tissue per hour. In a series of experiments, it was determined that a warm-blooded mouse requires 2.5 milliliters of O2 per gram of tissue per hour, whereas a cold-blooded crayfish requires
0.047 milliliter of O2 per gram of tissue per hour. Why is there such a dramatic difference in respiration rates between these animals?

Accepted Answer

Warm-blooded animals require m

Question 13

If only one molecule of pyruvate (instead of two) were produced per glucose molecule metabolized in glycolysis, then which of the following would be produced after glycolysis and before the electron transport chain?

Accepted Answer

A)  2 ATP, 6 NADH, and 2 FADH2 
B)  1 ATP, 4 NADH, and 1 FADH2 
C)  1 ATP, 3 NADH, and 1 FADH2 
D)  1 ATP, 1 NADH, and 1 FADH2 
A)  2 ATP, 6 NADH, and 2 FADH2 
B)  1 ATP, 4 NADH, and 1 FADH2 
C)  1 ATP, 3 NADH, and 1 FADH2 
D)  1 ATP, 1 NADH, and 1 FADH2

Question 14

If glucose is metabolized under completely anaerobic conditions, pyruvate

Accepted Answer

A)  immediately enters the Krebs cycle. 
B)  is converted to NADH. 
C)  leaves the fluid portion of the cytoplasm and enters the mitochondrial matrix. 
D)  is converted back to fructose until the concentration of oxygen increases. 
E)  is converted by fermentation to lactate or CO2 + ethanol. 
A)  immediately enters the Krebs cycle. 
B)  is converted to NADH. 
C)  leaves the fluid portion of the cytoplasm and enters the mitochondrial matrix. 
D)  is converted back to fructose until the concentration of oxygen increases. 
E)  is converted by fermentation to lactate or CO2 + ethanol.

Question 15

Briefly compare and contrast the processes of cellular respiration and photosynthesis.

Accepted Answer

During photosynthesis, carbon dioxide an

Question 16

Which of the following processes involves citric acid?

Accepted Answer

A)  The ETC 
B)  The Krebs cycle 
C)  Glycolysis 
A)  The ETC 
B)  The Krebs cycle 
C)  Glycolysis

Question 17

The process of fermentation is energetically more efficient than that of cellular respiration.

Accepted Answer

A) True 
 B)False

Question 18

The main function of cellular respiration is to produce

Accepted Answer

A)  ATP. 
B)  CO2. 
C)  NADH and FADH2. 
D)  glucose. 
A)  ATP. 
B)  CO2. 
C)  NADH and FADH2. 
D)  glucose.

Question 19

To be able to continue, each turn of the Krebs cycle must regenerate which of the following as a final product?

Accepted Answer

A)  NADH and FADH2 
B)  ATP 
C)  Pyruvate 
D)  Oxaloacetate 
E)  Acetyl CoA 
A)  NADH and FADH2 
B)  ATP 
C)  Pyruvate 
D)  Oxaloacetate 
E)  Acetyl CoA

Question 20

If no oxygen is available to a cell, then the net ATP production resulting from the metabolism of a single glucose molecule is

Accepted Answer

A)  no ATP. 
B)  32 ATP molecules. 
C)  36 ATP molecules. 
D)  2 ATP molecules. 
E)  1 ATP molecule. 
A)  no ATP. 
B)  32 ATP molecules. 
C)  36 ATP molecules. 
D)  2 ATP molecules. 
E)  1 ATP molecule.

Exam 8: Harvesting Energy: Glycolysis and Cellular Respiration

How does one account for the bubbles in a glass of beer or champagne?

Which of the following processes occurs in the cytoplasm?

Briefly describe the three main steps of aerobic glucose metabolism.

End products of the different fermentation processes include all of the following EXCEPT

In human muscle cells, fermentation (by itself) produces

The overall products of glycolysis are

What is the final electron acceptor in cellular respiration?

Where does the production of pyruvate occur during glycolysis?

Which of the following processes occurs across the mitochondrial membrane?

Which kind of metabolic poison would interfere with the glycolysis stage of cellular respiration?

The products of the Krebs cycle include

If only one molecule of pyruvate (instead of two) were produced per glucose molecule metabolized in glycolysis, then which of the following would be produced after glycolysis and before the electron transport chain?

If glucose is metabolized under completely anaerobic conditions, pyruvate

Briefly compare and contrast the processes of cellular respiration and photosynthesis.

Which of the following processes involves citric acid?

The process of fermentation is energetically more efficient than that of cellular respiration.

The main function of cellular respiration is to produce

To be able to continue, each turn of the Krebs cycle must regenerate which of the following as a final product?

If no oxygen is available to a cell, then the net ATP production resulting from the metabolism of a single glucose molecule is

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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