Question 1

As part of the cleavage step in glycolysis, glucose is:

Accepted Answer

A) converted to glyceraldehyde 3-phosphate and dihydroxyacetone phosphate. 
B) phosphorylated to glucose 6-phosphate. 
C) oxidized to 1,3-bisphosphoglycerate. 
D) reduced to phosphoenolpyruvate. 
E) converted by the enzyme isomerase to fructose. 
A) converted to glyceraldehyde 3-phosphate and dihydroxyacetone phosphate. 
B) phosphorylated to glucose 6-phosphate. 
C) oxidized to 1,3-bisphosphoglycerate. 
D) reduced to phosphoenolpyruvate. 
E) converted by the enzyme isomerase to fructose.

Question 2

In the citric acid cycle, carbon dioxide is produced in some reactions, but it is not consumed.

Accepted Answer

A) True 
 B)False

Question 3

ATP synthase catalyzes the synthesis of ATP from ADP and phosphate.

Accepted Answer

A) True 
 B)False

Question 4

For each pair of electrons passing from NADH to oxygen, how many ATP molecules can be generated?

Accepted Answer

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

Question 5

In glycolysis, ATP is consumed in some reactions and produced in others.

Accepted Answer

A) True 
 B)False

Question 6

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 7

For every molecule of glucose that begins glycolysis, how many molecules of acetyl CoA 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 8

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

Accepted Answer

A) True 
 B)False

Question 9

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 10

After glycolysis is completed, the carbon atoms present in a pyruvate molecule move directly into the citric acid cycle.

Accepted Answer

A) True 
 B)False

Question 11

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 12

Most of the enzymes of the citric acid cycle are found in the _____ of the _____.

Accepted Answer

A) cytosol; cell 
B) matrix; mitochondria 
C) lumen; smooth ER 
D) cristae; mitochondria 
E) ribosomes; rough ER 
A) cytosol; cell 
B) matrix; mitochondria 
C) lumen; smooth ER 
D) cristae; mitochondria 
E) ribosomes; rough ER

Question 13

Without a proton gradient across the inner mitochondrial membrane, chemiosmotic coupling cannot occur.

Accepted Answer

A) True 
 B)False

Question 14

In the citric acid cycle, NADH is produced in some reactions, but it is not consumed.

Accepted Answer

A) True 
 B)False

Question 15

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.

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

Most of the carriers of the electron transport chain are:

Accepted Answer

A) in the cytosol. 
B) in the mitochondrial matrix. 
C) contained between the outer and inner mitochondrial membranes. 
D) embedded in the inner mitochondrial membrane. 
E) embedded in the outer mitochondrial membrane. 
A) in the cytosol. 
B) in the mitochondrial matrix. 
C) contained between the outer and inner mitochondrial membranes. 
D) embedded in the inner mitochondrial membrane. 
E) embedded in the outer mitochondrial membrane.

Question 18

Cytochromes are unique electron carriers in that they can accept protons as well as electrons.

Accepted Answer

A) True 
 B)False

Question 19

The number of ATP molecules generated from each NADH produced in glycolysis is _______.

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 inner mitochondrial membrane is permeable to most small molecules and ions.

Accepted Answer

A) True 
 B)False

Exam 6: Respiration

As part of the cleavage step in glycolysis, glucose is:

In the citric acid cycle, carbon dioxide is produced in some reactions, but it is not consumed.

ATP synthase catalyzes the synthesis of ATP from ADP and phosphate.

For each pair of electrons passing from NADH to oxygen, how many ATP molecules can be generated?

In glycolysis, ATP is consumed in some reactions and produced in others.

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

For every molecule of glucose that begins glycolysis, how many molecules of acetyl CoA are produced?

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

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

After glycolysis is completed, the carbon atoms present in a pyruvate molecule move directly into the citric acid cycle.

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

Most of the enzymes of the citric acid cycle are found in the _____ of the _____.

Without a proton gradient across the inner mitochondrial membrane, chemiosmotic coupling cannot occur.

In the citric acid cycle, NADH is produced in some reactions, but it is not consumed.

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

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

Most of the carriers of the electron transport chain are:

Cytochromes are unique electron carriers in that they can accept protons as well as electrons.

The number of ATP molecules generated from each NADH produced in glycolysis is _______.

The inner mitochondrial membrane is permeable to most small molecules and ions.

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

Most of the enzymes of the citric acid cycle are found in the _ of the _.

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