Question 1

Oxidative phosphorylation depends on a gradient of ______ across the mitochondrial membrane.

Accepted Answer

A)  ADP 
B)  phosphate 
C)  glucose 
D)  protons 
E)  electrons 
A)  ADP 
B)  phosphate 
C)  glucose 
D)  protons 
E)  electrons D

Question 2

The electrochemical gradient resulting from electron transport is due to differences in ______ across the inner mitochondrial membrane.

Accepted Answer

A)  only the electric charge 
B)  proton concentration only 
C)  electric charge and proton concentration 
D)  only the ATP concentration 
E)  ATP and NAD+ concentrations 
A)  only the electric charge 
B)  proton concentration only 
C)  electric charge and proton concentration 
D)  only the ATP concentration 
E)  ATP and NAD+ concentrations C

Question 3

In respiration, most of the energy in the original glucose molecule is:

Accepted Answer

A)  stored in molecules of ADP. 
B)  stored in molecules of ATP. 
C)  stored in molecules of pyruvate. 
D)  released in molecules of carbon dioxide. 
E)  released as heat. 
A)  stored in molecules of ADP. 
B)  stored in molecules of ATP. 
C)  stored in molecules of pyruvate. 
D)  released in molecules of carbon dioxide. 
E)  released as heat. E

Question 4

At the end of glycolysis, most of the energy in the original glucose molecule is still present in pyruvate.

Accepted Answer

A) True 
 B)False

Question 5

For every glucose molecule that completes glycolysis, how many total molecules of ATP are produced?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 6

The final electron acceptor in the electron transport chain is:

Accepted Answer

A)  CoQ. 
B)  a cytochrome. 
C)  FMN. 
D)  oxygen. 
E)  carbon dioxide. 
A)  CoQ. 
B)  a cytochrome. 
C)  FMN. 
D)  oxygen. 
E)  carbon dioxide.

Question 7

As part of the first step in the first preparatory reaction of glycolysis:

Accepted Answer

A)  the glucose molecule is rearranged. 
B)  the glucose molecule is split in half. 
C)  glucose is phosphorylated. 
D)  NAD+ is reduced. 
E)  NADH is oxidized. 
A)  the glucose molecule is rearranged. 
B)  the glucose molecule is split in half. 
C)  glucose is phosphorylated. 
D)  NAD+ is reduced. 
E)  NADH is oxidized.

Question 8

Upon entering the citric acid cycle, the acetyl group combines with ______ to produce ______.

Accepted Answer

A)  coenzyme A; pyruvate 
B)  glucose; glucose 6-phosphate 
C)  oxaloacetate; citrate 
D)  oxaloacetate; carbon dioxide 
E)  NADH; citrate 
A)  coenzyme A; pyruvate 
B)  glucose; glucose 6-phosphate 
C)  oxaloacetate; citrate 
D)  oxaloacetate; carbon dioxide 
E)  NADH; citrate

Question 9

In glycolysis, what is the net energy harvest of ATP molecules per molecule of glucose?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 10

The complete oxidation of one molecule of glucose requires two turns around the citric acid cycle.

Accepted Answer

A) True 
 B)False

Question 11

During the conversion of pyruvate to acetyl CoA, _____ is produced.

Accepted Answer

A)  CO2 
B)  ATP 
C)  NAD+ 
D)  ADP 
E)  3-phosphoglycerate 
A)  CO2 
B)  ATP 
C)  NAD+ 
D)  ADP 
E)  3-phosphoglycerate

Question 12

Who am I? I move freely within the mitochondrial membrane and thus shuttle electrons between other carriers.

Accepted Answer

A)  CoQ 
B)  Fe-S proteins 
C)  cytochromes 
D)  cytochrome oxidase 
E)  CoA 
A)  CoQ 
B)  Fe-S proteins 
C)  cytochromes 
D)  cytochrome oxidase 
E)  CoA

Question 13

For each glucose molecule that begins respiration, 38 ATPs are formed.

Accepted Answer

A) True 
 B)False

Question 14

Ubiquinone is also called coenzyme Q.

Accepted Answer

A) True 
 B)False

Question 15

The NADH generated during fermentation donates its electrons to the mitochondrial electron transport chain.

Accepted Answer

A) True 
 B)False

Question 16

In the electron transport chain, electrons pass from complex ____ directly to O2.

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 17

When one speaks of the cell's "net energy harvest" from glycolysis one is referring to the amount of:

Accepted Answer

A)  ATP only. 
B)  ADP only. 
C)  NAD+ only. 
D)  NADH only 
E)  ATP and NADH. 
A)  ATP only. 
B)  ADP only. 
C)  NAD+ only. 
D)  NADH only 
E)  ATP and NADH.

Question 18

For every molecule of glucose that begins glycolysis, how many ATP molecules are consumed?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 19

In each turn of the citric acid cycle, how many molecules of ATP are produced?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 20

The metabolic "hub" of the cell is:

Accepted Answer

A)  fermentation. 
B)  glycolysis. 
C)  oxidative phosphorylation. 
D)  the electron transport chain. 
E)  the citric acid cycle. 
A)  fermentation. 
B)  glycolysis. 
C)  oxidative phosphorylation. 
D)  the electron transport chain. 
E)  the citric acid cycle.

Exam 6: Respiration

Oxidative phosphorylation depends on a gradient of ______ across the mitochondrial membrane.

The electrochemical gradient resulting from electron transport is due to differences in ______ across the inner mitochondrial membrane.

In respiration, most of the energy in the original glucose molecule is:

At the end of glycolysis, most of the energy in the original glucose molecule is still present in pyruvate.

For every glucose molecule that completes glycolysis, how many total molecules of ATP are produced?

The final electron acceptor in the electron transport chain is:

As part of the first step in the first preparatory reaction of glycolysis:

Upon entering the citric acid cycle, the acetyl group combines with ______ to produce ______.

In glycolysis, what is the net energy harvest of ATP molecules per molecule of glucose?

The complete oxidation of one molecule of glucose requires two turns around the citric acid cycle.

During the conversion of pyruvate to acetyl CoA, _____ is produced.

Who am I? I move freely within the mitochondrial membrane and thus shuttle electrons between other carriers.

For each glucose molecule that begins respiration, 38 ATPs are formed.

Ubiquinone is also called coenzyme Q.

The NADH generated during fermentation donates its electrons to the mitochondrial electron transport chain.

In the electron transport chain, electrons pass from complex ____ directly to O2.

When one speaks of the cell's "net energy harvest" from glycolysis one is referring to the amount of:

For every molecule of glucose that begins glycolysis, how many ATP molecules are consumed?

In each turn of the citric acid cycle, how many molecules of ATP are produced?

The metabolic "hub" of the cell is:

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters

Upon entering the citric acid cycle, the acetyl group combines with to produce .

In the electron transport chain, electrons pass from complex ____ directly to O₂.