Question 1

Circulatory systems in molluscs

Accepted Answer

A)  are open in all species of molluscs. 
B)  are closed in all species of molluscs. 
C)  are open in species of large-sized molluscs and are closed in species of small-sized molluscs. 
D)  are open in species of small-sized molluscs and are closed in species of large-sized molluscs. 
E)  are open or closed without regard to body size. 
A)  are open in all species of molluscs. 
B)  are closed in all species of molluscs. 
C)  are open in species of large-sized molluscs and are closed in species of small-sized molluscs. 
D)  are open in species of small-sized molluscs and are closed in species of large-sized molluscs. 
E)  are open or closed without regard to body size.

Question 2

The epiglottis of a human covers the glottis when he or she is

Accepted Answer

A)  talking. 
B)  breathing. 
C)  swallowing. 
D)  yawning. 
E)  sleeping. 
A)  talking. 
B)  breathing. 
C)  swallowing. 
D)  yawning. 
E)  sleeping.

Question 3

An increase from pH 7.2 to pH 7.4 around hemoglobin causes

Accepted Answer

A)  hemoglobin to release all bound oxygen molecules. 
B)  an increase in the affinity of hemoglobin to bind oxygen molecules. 
C)  hemoglobin to denature. 
D)  an increase in the binding of H⁺ by hemoglobin. 
E)  hemoglobin to more readily give up its oxygen molecules. 
A)  hemoglobin to release all bound oxygen molecules. 
B)  an increase in the affinity of hemoglobin to bind oxygen molecules. 
C)  hemoglobin to denature. 
D)  an increase in the binding of H⁺ by hemoglobin. 
E)  hemoglobin to more readily give up its oxygen molecules.

Question 4

Large proteins such as albumin remain in capillaries rather than diffusing out, resulting in the

Accepted Answer

A)  loss of osmotic pressure in the capillaries. 
B)  development of an osmotic pressure difference across capillary walls. 
C)  loss of fluid from capillaries. 
D)  increased diffusion of CO₂. 
E)  increased diffusion of Hb. 
A)  loss of osmotic pressure in the capillaries. 
B)  development of an osmotic pressure difference across capillary walls. 
C)  loss of fluid from capillaries. 
D)  increased diffusion of CO₂. 
E)  increased diffusion of Hb.

Question 5

An oil-water mixture works as an insecticidal spray against mosquitoes and other insects because it

Accepted Answer

A)  coats their lungs. 
B)  blocks the openings into the tracheal system. 
C)  interferes with gas exchange across the capillaries. 
D)  clogs their bronchi. 
E)  prevents gases from leaving the atmosphere. 
A)  coats their lungs. 
B)  blocks the openings into the tracheal system. 
C)  interferes with gas exchange across the capillaries. 
D)  clogs their bronchi. 
E)  prevents gases from leaving the atmosphere.

Question 6

An increased concentration of nitric oxide within a vascular bed is associated with

Accepted Answer

A)  vasoconstriction. 
B)  vasodilation. 
C)  narrowing of the arteries. 
D)  a reduction in blood flow in that region. 
E)  a decreased amount of blood in the capillaries of that vascular bed. 
A)  vasoconstriction. 
B)  vasodilation. 
C)  narrowing of the arteries. 
D)  a reduction in blood flow in that region. 
E)  a decreased amount of blood in the capillaries of that vascular bed.

Question 7

If a molecule of CO₂ released into the blood in your left toe is exhaled from your nose, it must pass through all of the following except

Accepted Answer

A)  the pulmonary vein. 
B)  an alveolus. 
C)  the trachea. 
D)  the right atrium. 
E)  the right ventricle. 
A)  the pulmonary vein. 
B)  an alveolus. 
C)  the trachea. 
D)  the right atrium. 
E)  the right ventricle.

Question 8

In which of the following organisms does blood flow from the pulmocutaneous circulation to the heart before circulating through the rest of the body?

Accepted Answer

A)  annelids 
B)  molluscs 
C)  fishes 
D)  frogs 
E)  insects 
A)  annelids 
B)  molluscs 
C)  fishes 
D)  frogs 
E)  insects

Question 9

Dissolved proteins in human plasma include which of the following?
I.fibrinogen
II.hemoglobin
III.immunoglobulin

Accepted Answer

A)  I only 
B)  II only 
C)  I and III only 
D)  II and III only 
E)  I, II, and III 
A)  I only 
B)  II only 
C)  I and III only 
D)  II and III only 
E)  I, II, and III

Question 10

In mammals, most gas exchange between the atmosphere and the pulmonary blood occurs in the

Accepted Answer

A)  trachea. 
B)  larynx. 
C)  bronchi. 
D)  bronchioles. 
E)  alveoli. 
A)  trachea. 
B)  larynx. 
C)  bronchi. 
D)  bronchioles. 
E)  alveoli.

Exam 42: Circulation and Gas Exchange

Circulatory systems in molluscs

The epiglottis of a human covers the glottis when he or she is

An increase from pH 7.2 to pH 7.4 around hemoglobin causes

Large proteins such as albumin remain in capillaries rather than diffusing out, resulting in the

An oil-water mixture works as an insecticidal spray against mosquitoes and other insects because it

An increased concentration of nitric oxide within a vascular bed is associated with

If a molecule of CO₂ released into the blood in your left toe is exhaled from your nose, it must pass through all of the following except

In which of the following organisms does blood flow from the pulmocutaneous circulation to the heart before circulating through the rest of the body?

Dissolved proteins in human plasma include which of the following? I.fibrinogen II.hemoglobin III.immunoglobulin

In mammals, most gas exchange between the atmosphere and the pulmonary blood occurs in the

Introduction: Themes in the Study of Life

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

From Gene to Protein

Regulation of Gene Expression

Viruses

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

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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