Question 1

During the glucose activation stage of glycolysis

Accepted Answer

A)  there is a net gain of four ATP molecules. 
B)  fructose bisphosphate is split into two G3P molecules. 
C)  there is a conversion of two G3P molecules to two pyruvate molecules. 
D)  two ATP molecules are used to make one fructose bisphosphate molecule. 
E)  there is a net gain of two ATP molecules. 
A)  there is a net gain of four ATP molecules. 
B)  fructose bisphosphate is split into two G3P molecules. 
C)  there is a conversion of two G3P molecules to two pyruvate molecules. 
D)  two ATP molecules are used to make one fructose bisphosphate molecule. 
E)  there is a net gain of two ATP molecules.

Question 2

From the beginning of glycolysis to the end of the Krebs cycle (excluding the ETC), what has the cell gained from the breakdown of each molecule of glucose?

Accepted Answer

A)  2 molecules of ATP and 6 of NADH 
B)  2 molecules of ATP, lactate, and NAD+ 
C)  4 molecules of ATP, 10 of NADH, and 2 of FADH2 
D)  2 molecules of pyruvate 
E)  2 molecules of ATP, 4 of NADH, and 2 of FADH2 
A)  2 molecules of ATP and 6 of NADH 
B)  2 molecules of ATP, lactate, and NAD+ 
C)  4 molecules of ATP, 10 of NADH, and 2 of FADH2 
D)  2 molecules of pyruvate 
E)  2 molecules of ATP, 4 of NADH, and 2 of FADH2

Question 3

We breathe more heavily during exercise because our cells

Accepted Answer

A)  need more glucose to be broken down. 
B)  are producing more CO2 and need to get rid of it. 
C)  need more ADP to be converted to ATP. 
A)  need more glucose to be broken down. 
B)  are producing more CO2 and need to get rid of it. 
C)  need more ADP to be converted to ATP.

Question 4

During chemiosmosis, a hydrogen ion gradient is linked to the production of ATP.

Accepted Answer

A) True 
 B)False

Question 5

In aerobic cellular respiration, the ETC receives electrons directly from

Accepted Answer

A)  NADH and FADH2. 
B)  ATP only. 
C)  FADH2 only. 
D)  NADH and ATP. 
E)  NADH only. 
A)  NADH and FADH2. 
B)  ATP only. 
C)  FADH2 only. 
D)  NADH and ATP. 
E)  NADH only.

Question 6

At the end of aerobic cellular respiration, how many total carbon dioxide molecules are produced for each glucose metabolized?

Accepted Answer

A)  36 
B)  32 
C)  4 
D)  6 
E)  2 
A)  36 
B)  32 
C)  4 
D)  6 
E)  2

Question 7

Which of the following processes involves hydrogen ions moving through ATP synthase channels, generating ATP molecules?

Accepted Answer

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

Question 8

All of the following are true statements about ATP EXCEPT that it is

Accepted Answer

A)  the cell's principal compound for energy transfers. 
B)  synthesized only within mitochondria. 
C)  the molecule that all living cells rely on to do work. 
D)  a short- term energy- storage compound. 
A)  the cell's principal compound for energy transfers. 
B)  synthesized only within mitochondria. 
C)  the molecule that all living cells rely on to do work. 
D)  a short- term energy- storage compound.

Question 9

As a bicyclist pedals up a hill to the finish line of a race and "feels the burn" in his leg muscles, those muscle cells are most likely utilizing

Accepted Answer

A)  only oxygen for maximum ATP production. 
B)  some lactate fermentation and lactic starting to build up in his muscle tissue causing a cramp. 
C)  only cellular respiration for maximum ATP production. 
D)  both cellular respiration and oxygen for maximum ATP production. 
A)  only oxygen for maximum ATP production. 
B)  some lactate fermentation and lactic starting to build up in his muscle tissue causing a cramp. 
C)  only cellular respiration for maximum ATP production. 
D)  both cellular respiration and oxygen for maximum ATP production.

Question 10

What is the final electron acceptor in cellular respiration?

Accepted Answer

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

Question 11

Briefly describe the three main steps of aerobic glucose metabolism.

Accepted Answer

(1) Glycolysis (glucose converted to pyr

Question 12

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 13

The organelles responsible for the bulk of ATP production via cellular respiration are the .

Accepted Answer

The answer of The organelles responsible for the bulk of...

Question 14

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

Accepted Answer

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

Question 15

What is the significance of the conversion of pyruvate to lactate during fermentation?

Accepted Answer

A)  The oxidation of pyruvate becomes possible. 
B)  NAD+ is regenerated for use in glycolysis. 
C)  ATP is produced at a higher rate. 
D)  Pyruvate becomes available to enter mitochondrial matrix reactions. 
E)  The citric acid cycle is initiated. 
A)  The oxidation of pyruvate becomes possible. 
B)  NAD+ is regenerated for use in glycolysis. 
C)  ATP is produced at a higher rate. 
D)  Pyruvate becomes available to enter mitochondrial matrix reactions. 
E)  The citric acid cycle is initiated.

Question 16

Why is it important that NAD+ molecules are regenerated during fermentation?

Accepted Answer

Glycolysis would stop when all

Question 17

The step in aerobic respiration that produces the most ATP per molecule of glucose is

Accepted Answer

A)  alcohol fermentation. 
B)  the ETC. 
C)  glycolysis. 
D)  lactate fermentation. 
E)  the citric acid cycle. 
A)  alcohol fermentation. 
B)  the ETC. 
C)  glycolysis. 
D)  lactate fermentation. 
E)  the citric acid cycle.

Question 18

Which of the following processes requires oxygen?

Accepted Answer

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

Question 19

During the final events of cellular respiration, oxygen combines with to form .

Accepted Answer

A)  hydrogen ions only; water 
B)  energy- depleted electrons and hydrogen ions; water 
C)  carbon only; CO2 
D)  energy- depleted electrons only; water 
E)  energy- depleted electrons and carbon; CO2 
A)  hydrogen ions only; water 
B)  energy- depleted electrons and hydrogen ions; water 
C)  carbon only; CO2 
D)  energy- depleted electrons only; water 
E)  energy- depleted electrons and carbon; CO2

Question 20

For bacteria to continue growing rapidly when they shift from an aerobic environment to an anaerobic environment, they must

Accepted Answer

A)  produce ATP using NADH. 
B)  produce more ATP per molecule of glucose during glycolysis. 
C)  increase the rate of glycolysis. 
D)  increase the rate of the Krebs cycle. 
E)  increase the rate of glucose production. 
A)  produce ATP using NADH. 
B)  produce more ATP per molecule of glucose during glycolysis. 
C)  increase the rate of glycolysis. 
D)  increase the rate of the Krebs cycle. 
E)  increase the rate of glucose production.

Exam 8: Harvesting Energy: Glycolysis and Cellular Respiration

During the glucose activation stage of glycolysis

From the beginning of glycolysis to the end of the Krebs cycle (excluding the ETC), what has the cell gained from the breakdown of each molecule of glucose?

We breathe more heavily during exercise because our cells

During chemiosmosis, a hydrogen ion gradient is linked to the production of ATP.

In aerobic cellular respiration, the ETC receives electrons directly from

At the end of aerobic cellular respiration, how many total carbon dioxide molecules are produced for each glucose metabolized?

Which of the following processes involves hydrogen ions moving through ATP synthase channels, generating ATP molecules?

All of the following are true statements about ATP EXCEPT that it is

As a bicyclist pedals up a hill to the finish line of a race and "feels the burn" in his leg muscles, those muscle cells are most likely utilizing

What is the final electron acceptor in cellular respiration?

Briefly describe the three main steps of aerobic glucose metabolism.

Which of the following processes involves citric acid?

The organelles responsible for the bulk of ATP production via cellular respiration are the .

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

What is the significance of the conversion of pyruvate to lactate during fermentation?

Why is it important that NAD+ molecules are regenerated during fermentation?

The step in aerobic respiration that produces the most ATP per molecule of glucose is

Which of the following processes requires oxygen?

During the final events of cellular respiration, oxygen combines with to form .

For bacteria to continue growing rapidly when they shift from an aerobic environment to an anaerobic environment, they must

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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