Question 1

The production of red blood cells is stimulated by

Accepted Answer

A)  low-density lipoproteins. 
B)  immunoglobulins. 
C)  erythropoietin. 
D)  epinephrine. 
E)  platelets. 
A)  low-density lipoproteins. 
B)  immunoglobulins. 
C)  erythropoietin. 
D)  epinephrine. 
E)  platelets.

Question 2

One feature that amphibians and humans have in common is

Accepted Answer

A)  the number of heart chambers. 
B)  a complete separation of circuits for circulation. 
C)  the number of circuits for circulation. 
D)  a low blood pressure in the systemic circuit. 
A)  the number of heart chambers. 
B)  a complete separation of circuits for circulation. 
C)  the number of circuits for circulation. 
D)  a low blood pressure in the systemic circuit.

Question 3

The only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart are the

Accepted Answer

A)  amphibians. 
B)  birds. 
C)  fishes. 
D)  mammals. 
E)  reptiles. 
A)  amphibians. 
B)  birds. 
C)  fishes. 
D)  mammals. 
E)  reptiles.

Question 4

Dissolved proteins in human plasma include which of the following?

Accepted Answer

A)  fibrinogen only 
B)  hemoglobin only 
C)  fibrinogen and immunoglobulin only 
D)  hemoglobin and immunoglobulin only 
E)  fibrinogen, hemoglobin, and immunoglobulin 
A)  fibrinogen only 
B)  hemoglobin only 
C)  fibrinogen and immunoglobulin only 
D)  hemoglobin and immunoglobulin only 
E)  fibrinogen, hemoglobin, and immunoglobulin

Question 5

At the summit of a high mountain, the atmospheric pressure is 380 mm Hg. If the atmosphere is still composed of 21% oxygen, then the partial pressure of oxygen at this altitude is

Accepted Answer

A)  0 mm Hg. 
B)  80 mm Hg. 
C)  160 mm Hg. 
D)  380 mm Hg. 
E)  760 mm Hg. 
A)  0 mm Hg. 
B)  80 mm Hg. 
C)  160 mm Hg. 
D)  380 mm Hg. 
E)  760 mm Hg.

Question 6

The plasma proteins in humans

Accepted Answer

A)  maintain the blood's osmotic pressure. 
B)  transport water-soluble lipids. 
C)  carry out gas exchange. 
D)  undergo aerobic metabolism. 
E)  transport oxygen. 
A)  maintain the blood's osmotic pressure. 
B)  transport water-soluble lipids. 
C)  carry out gas exchange. 
D)  undergo aerobic metabolism. 
E)  transport oxygen.

Question 7

Which of the following best explains how the bar-headed goose can survive at an altitude of 8,800 meters?

Accepted Answer

A)  The bar-headed goose has a higher metabolic rate. 
B)  The bar-headed goose has a mutation in the hemoglobin gene. 
C)  The bar-headed goose has a decreased tidal volume. 
D)  The bar-headed goose has an open circulatory system. 
A)  The bar-headed goose has a higher metabolic rate. 
B)  The bar-headed goose has a mutation in the hemoglobin gene. 
C)  The bar-headed goose has a decreased tidal volume. 
D)  The bar-headed goose has an open circulatory system.

Question 8

When the air in a testing chamber is specially mixed so that its oxygen content is 10% and its overall air pressure is 400 mm Hg, then the partial pressure of oxygen is

Accepted Answer

A)  400 mm Hg. 
B)  82 mm Hg. 
C)  40 mm Hg. 
D)  21 mm Hg. 
E)  4 mm Hg. 
A)  400 mm Hg. 
B)  82 mm Hg. 
C)  40 mm Hg. 
D)  21 mm Hg. 
E)  4 mm Hg.

Exam 34: Circulation and Gas Exchange

The production of red blood cells is stimulated by

One feature that amphibians and humans have in common is

The only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart are the

Dissolved proteins in human plasma include which of the following?

At the summit of a high mountain, the atmospheric pressure is 380 mm Hg. If the atmosphere is still composed of 21% oxygen, then the partial pressure of oxygen at this altitude is

The plasma proteins in humans

Which of the following best explains how the bar-headed goose can survive at an altitude of 8,800 meters?

When the air in a testing chamber is specially mixed so that its oxygen content is 10% and its overall air pressure is 400 mm Hg, then the partial pressure of oxygen is

Introduction: Evolution and the Foundations of Biology

The Chemical Context of Life

Carbon and the Molecular Diversity of Life

A Tour of the Cell

Membrane Transport and Cell Signaling

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

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

Development, Stem Cells, and Cancer

Viruses

Genomes and Their Evolution

Descent With Modification

Phylogeny

The Evolution of Populations

The Origin of Species

Broad Patterns of Evolution

Early Life and the Diversification of Prokaryotes

The Origin and Diversification of Eukaryotes

The Colonization of Land by Plants and Fungi

The Rise of Animal Diversity

Plant Structure and Growth

Resource Acquisition, Nutrition, and Transport in Vascular Plants

Reproduction and Domestication of Flowering Plants

Plant Responses to Internal and External Signals

Homeostasis and Endocrine Signaling

Animal Nutrition

The Immune System

Reproduction and Development

Neurons, Synapses, and Signaling

Nervous and Sensory Systems

Motor Mechanisms and Behavior

Population Ecology and the Distribution of Organisms

Species Interactions

Ecosystems and Energy

Global Ecology and Conservation Biology

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