Question 1

Under identical atmospheric conditions, freshwater ________.

Accepted Answer

A)  has more dissolved oxygen than seawater 
B)  has less dissolved oxygen than seawater 
C)  can hold 10-40 times more carbon dioxide than air 
D)  can hold 10-40 times more oxygen than air 
A)  has more dissolved oxygen than seawater 
B)  has less dissolved oxygen than seawater 
C)  can hold 10-40 times more carbon dioxide than air 
D)  can hold 10-40 times more oxygen than air

Question 2

An electrocardiogram (ECG)provides information about ________.

Accepted Answer

A)  the pressure of blood in the heart chambers 
B)  the rhythm of heart contractions 
C)  the amount of oxygen in the blood as it leaves the heart 
D)  the speed of blood flow through the blood vessels 
A)  the pressure of blood in the heart chambers 
B)  the rhythm of heart contractions 
C)  the amount of oxygen in the blood as it leaves the heart 
D)  the speed of blood flow through the blood vessels

Question 3

The velocity of blood flow is the lowest in capillaries because ________.

Accepted Answer

A)  the capillaries have internal valves that slow the flow of blood 
B)  the diastolic blood pressure is too low to deliver blood to the capillaries at a high flow rate 
C)  the systemic capillaries are supplied by the left ventricle, which has a lower cardiac output than the right ventricle 
D)  the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system 
A)  the capillaries have internal valves that slow the flow of blood 
B)  the diastolic blood pressure is too low to deliver blood to the capillaries at a high flow rate 
C)  the systemic capillaries are supplied by the left ventricle, which has a lower cardiac output than the right ventricle 
D)  the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system

Question 4

A normal event in the process of blood clotting is the ________.

Accepted Answer

A)  production of erythropoietin 
B)  conversion of fibrin to fibrinogen 
C)  activation of prothrombin to thrombin 
D)  synthesis of hemoglobin 
A)  production of erythropoietin 
B)  conversion of fibrin to fibrinogen 
C)  activation of prothrombin to thrombin 
D)  synthesis of hemoglobin

Question 5

A patient with a heart rate of 70 beats per minute and a stroke volume of 70 mL/beat will have a cardiac output of ________.

Accepted Answer

A)  1,000 mL/minute 
B)  1,400 mL/minute 
C)  2,800 mL/minute 
D)  4,900 mL/minute 
A)  1,000 mL/minute 
B)  1,400 mL/minute 
C)  2,800 mL/minute 
D)  4,900 mL/minute

Question 6

Damage to the sinoatrial node in humans would ________.

Accepted Answer

A)  block conductance between the bundle branches and the Purkinje fibers 
B)  have a negative effect on peripheral resistance 
C)  disrupt the rate and timing of cardiac muscle contractions 
D)  have a direct effect on blood pressure monitors in the aorta 
A)  block conductance between the bundle branches and the Purkinje fibers 
B)  have a negative effect on peripheral resistance 
C)  disrupt the rate and timing of cardiac muscle contractions 
D)  have a direct effect on blood pressure monitors in the aorta

Question 7

Which of the following represents the correct flow of air into the lung of a mammal?

Accepted Answer

A)  trachea → bronchioles → bronchi → alveoli 
B)  larnyx → trachea → bronchi → bronchioles → alveoli 
C)  trachea → tracheoles → bronchi → alveoli 
D)  alveoli → tracheoles → bronchi → trachea 
A)  trachea → bronchioles → bronchi → alveoli 
B)  larnyx → trachea → bronchi → bronchioles → alveoli 
C)  trachea → tracheoles → bronchi → alveoli 
D)  alveoli → tracheoles → bronchi → trachea

Exam 42: Circulation and Gas Exchange

Under identical atmospheric conditions, freshwater ________.

An electrocardiogram (ECG)provides information about ________.

The velocity of blood flow is the lowest in capillaries because ________.

A normal event in the process of blood clotting is the ________.

A patient with a heart rate of 70 beats per minute and a stroke volume of 70 mL/beat will have a cardiac output of ________.

Damage to the sinoatrial node in humans would ________.

Which of the following represents the correct flow of air into the lung of a mammal?

Evolution, the Themes of Biology, and Scientific Inquiry

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Viruses

DNA Tools and Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity II: The Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Vascular Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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