Question 1

Which of the following happens in the lungs?

Accepted Answer

A) Gases move up a concentration gradient. 
B) Blood loses all of its carbon dioxide. 
C) Some of the oxygen in the air moves into the blood, and some of the carbon dioxide in the blood moves into the air. 
D) Air loses all of its oxygen. 
E) Gases move by bulk flow into and out of the circulation. 
A) Gases move up a concentration gradient. 
B) Blood loses all of its carbon dioxide. 
C) Some of the oxygen in the air moves into the blood, and some of the carbon dioxide in the blood moves into the air. 
D) Air loses all of its oxygen. 
E) Gases move by bulk flow into and out of the circulation.

Question 2

The lungs of reptiles are better developed than those of amphibians because reptiles:

Accepted Answer

A) are larger animals. 
B) have a higher metabolic rate. 
C) have a dry, scaly skin. 
D) lay shelled eggs. 
E) use oxygen for cellular processes. 
A) are larger animals. 
B) have a higher metabolic rate. 
C) have a dry, scaly skin. 
D) lay shelled eggs. 
E) use oxygen for cellular processes.

Question 3

Why does a typical fish die quickly when it is not in water?

Accepted Answer

A) Gills cannot exchange gases in air, only in water. 
B) The gills collapse. 
C) Gills split water molecules into hydrogen and oxygen, used for aerobic cellular respiration. 
D) Water contains more oxygen, per unit volume, than does air. 
A) Gills cannot exchange gases in air, only in water. 
B) The gills collapse. 
C) Gills split water molecules into hydrogen and oxygen, used for aerobic cellular respiration. 
D) Water contains more oxygen, per unit volume, than does air.

Question 4

Frogs use their skin as a respiratory organ. True or False?

Accepted Answer

A) True 
 B)False

Question 5

Why do smokers cough?

Accepted Answer

A) Nicotine blocks chemoreceptors in the nose. 
B) Smoking damages the cilia that normally remove mucus and debris from the respiratory tract. 
C) Smoking affects the respiratory center neurons in the medulla. 
D) Carbon monoxide in the smoke triggers the cough reflex. 
A) Nicotine blocks chemoreceptors in the nose. 
B) Smoking damages the cilia that normally remove mucus and debris from the respiratory tract. 
C) Smoking affects the respiratory center neurons in the medulla. 
D) Carbon monoxide in the smoke triggers the cough reflex.

Question 6

The surface area of all respiratory systems must be large compared with the size of the animal involved because diffusion is slow. True or False?

Accepted Answer

A) True 
 B)False

Question 7

Which of these animals can have gills for gas exchange?

Accepted Answer

A) insects 
B) earthworms 
C) spiders 
D) tadpoles 
E) jellyfishes 
A) insects 
B) earthworms 
C) spiders 
D) tadpoles 
E) jellyfishes

Question 8

Which respiratory system characteristics are shared by fish, frogs, jellyfish, and earthworms?

Accepted Answer

A) internal respiratory structures 
B) gas exchange across the skin 
C) gas exchange across a moist respiratory surface 
D) respiratory system with a complex network of tubes 
E) lack of a true circulatory system 
A) internal respiratory structures 
B) gas exchange across the skin 
C) gas exchange across a moist respiratory surface 
D) respiratory system with a complex network of tubes 
E) lack of a true circulatory system

Question 9

If a respiratory surface dries out, gas exchange will:

Accepted Answer

A) increase. 
B) decrease. 
C) stop. 
D) not be affected. 
E) decrease for oxygen but increase for carbon dioxide. 
A) increase. 
B) decrease. 
C) stop. 
D) not be affected. 
E) decrease for oxygen but increase for carbon dioxide.

Question 10

Which of the following structures protects the delicate gills of fish?

Accepted Answer

A) an operculum 
B) parabronchi 
C) tracheoles 
D) spiracles 
A) an operculum 
B) parabronchi 
C) tracheoles 
D) spiracles

Question 11

Which structure prevents foods and liquids from entering the lungs?

Accepted Answer

A) larynx 
B) pharynx 
C) epiglottis 
D) bronchus 
E) bronchiole 
A) larynx 
B) pharynx 
C) epiglottis 
D) bronchus 
E) bronchiole

Question 12

How much air enters the lungs in a human's average breath?

Accepted Answer

A) 125 milliliter 
B) 250 milliliter 
C) 500 milliliter 
D) 750 milliliter 
E) 1,000 milliliter 
A) 125 milliliter 
B) 250 milliliter 
C) 500 milliliter 
D) 750 milliliter 
E) 1,000 milliliter

Question 13

In what ways do bulk flow and diffusion interact to enable respiratory systems to deliver oxygen quickly to all cells of the body?

Accepted Answer

Bulk flow carries oxygen quick

Question 14

Which of the following is NOT part of the conducting portion of the human respiratory system?

Accepted Answer

A) alveoli 
B) tracheae 
C) bronchi 
D) larynx 
A) alveoli 
B) tracheae 
C) bronchi 
D) larynx

Question 15

Animals need a respiratory system because each cell of their bodies is involved in the process of:

Accepted Answer

A) intracellular digestion. 
B) cellular respiration. 
C) hormone production. 
D) nitrogen fixation. 
E) extracellular digestion. 
A) intracellular digestion. 
B) cellular respiration. 
C) hormone production. 
D) nitrogen fixation. 
E) extracellular digestion.

Question 16

Fish gills consist of a series of:

Accepted Answer

A) parabronchi. 
B) opercula. 
C) spiracles. 
D) interconnected bronchioles. 
E) filaments. 
A) parabronchi. 
B) opercula. 
C) spiracles. 
D) interconnected bronchioles. 
E) filaments.

Question 17

Most of the oxygen in the blood is:

Accepted Answer

A) bound to hemoglobin. 
B) in the white blood cells. 
C) combined with carbon dioxide. 
D) in the plasma. 
E) carried by leukocytes. 
A) bound to hemoglobin. 
B) in the white blood cells. 
C) combined with carbon dioxide. 
D) in the plasma. 
E) carried by leukocytes.

Question 18

When you begin running hard, what stimulates you to breathe faster?

Accepted Answer

The respiratory center of the

Question 19

Breathing in terrestrial animals is a major route of:

Accepted Answer

A) loss of ions. 
B) uptake of glucose. 
C) loss of water. 
D) uptake of H+. 
A) loss of ions. 
B) uptake of glucose. 
C) loss of water. 
D) uptake of H+.

Question 20

Horsehair worms, in the phylum Nematomorpha, do not have any respiratory system. They are usually found in puddles of water or on damp sidewalks and patios, or they may come wiggling out of insects. These creatures have no economic importance other than being parasitic to some insects. Based on this scenario, horsehair worms are most likely to:

Accepted Answer

A) have very thick bodies. 
B) have a dry skin surface. 
C) use large amounts of energy. 
D) have a large surface area compared with their volume. 
E) be unable to efficiently digest food. 
A) have very thick bodies. 
B) have a dry skin surface. 
C) use large amounts of energy. 
D) have a large surface area compared with their volume. 
E) be unable to efficiently digest food.

Exam 33: Respiration

Which of the following happens in the lungs?

The lungs of reptiles are better developed than those of amphibians because reptiles:

Why does a typical fish die quickly when it is not in water?

Frogs use their skin as a respiratory organ. True or False?

Why do smokers cough?

The surface area of all respiratory systems must be large compared with the size of the animal involved because diffusion is slow. True or False?

Which of these animals can have gills for gas exchange?

Which respiratory system characteristics are shared by fish, frogs, jellyfish, and earthworms?

If a respiratory surface dries out, gas exchange will:

Which of the following structures protects the delicate gills of fish?

Which structure prevents foods and liquids from entering the lungs?

How much air enters the lungs in a human's average breath?

In what ways do bulk flow and diffusion interact to enable respiratory systems to deliver oxygen quickly to all cells of the body?

Which of the following is NOT part of the conducting portion of the human respiratory system?

Animals need a respiratory system because each cell of their bodies is involved in the process of:

Fish gills consist of a series of:

Most of the oxygen in the blood is:

When you begin running hard, what stimulates you to breathe faster?

Breathing in terrestrial animals is a major route of:

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

The Continuity of Life: Cellular Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amidst Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

How Do Ecosystems Work

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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