Question 1

One ________ leads to each human lung.

Accepted Answer

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

Question 2

Carbon dioxide can be transported in the blood by all of the following methods, EXCEPT

Accepted Answer

A) dissolved in plasma as CO2. 
B) carried in plasma as HCO3-. 
C) bound to hemoglobin. 
D) as CO bound to hemoglobin. 
A) dissolved in plasma as CO2. 
B) carried in plasma as HCO3-. 
C) bound to hemoglobin. 
D) as CO bound to hemoglobin.

Question 3

How are birds able to get fresh air even when they are exhaling?

Accepted Answer

Birds have posterior air sacs

Question 4

All respiratory systems have all of the following EXCEPT:

Accepted Answer

A) a moist gas exchange surface. 
B) a large surface area. 
C) thin surfaces. 
D) air-filled lungs. 
A) a moist gas exchange surface. 
B) a large surface area. 
C) thin surfaces. 
D) air-filled lungs.

Question 5

Gas exchange in the lungs occurs due to:

Accepted Answer

A) active transport of gases between the blood and the alveolus. 
B) active transport of gases between hemoglobin and the alveolus. 
C) passive diffusion of gases between the blood and the alveolus. 
D) facilitated diffusion of gases between the blood and the alveolus. 
E) facilitated diffusion of gases between the hemoglobin and the alveolus. 
A) active transport of gases between the blood and the alveolus. 
B) active transport of gases between hemoglobin and the alveolus. 
C) passive diffusion of gases between the blood and the alveolus. 
D) facilitated diffusion of gases between the blood and the alveolus. 
E) facilitated diffusion of gases between the hemoglobin and the alveolus.

Question 6

The cells that line the human respiratory passages secrete:

Accepted Answer

A) mucus. 
B) blood. 
C) water. 
D) hormones. 
E) enzymes. 
A) mucus. 
B) blood. 
C) water. 
D) hormones. 
E) enzymes.

Question 7

The respiratory system is regulated to maintain a constant level of ________ in the blood.

Accepted Answer

The answer of The respiratory system is regulated to maintain...

Question 8

The respiratory center is very sensitive to changes in ________ levels, but not very sensitive to changes in ________ levels.

Accepted Answer

A) blood sugar; hormone 
B) hormone; blood sugar 
C) temperature; blood pressure 
D) carbon dioxide; oxygen 
E) oxygen; carbon dioxide 
A) blood sugar; hormone 
B) hormone; blood sugar 
C) temperature; blood pressure 
D) carbon dioxide; oxygen 
E) oxygen; carbon dioxide

Question 9

What happens during countercurrent exchange?

Accepted Answer

A) Steep concentration gradients are created. 
B) There is a transfer of heat or solute from fluids flowing in opposite directions. 
C) There is a transfer of heat or solute from fluids flowing in the same direction. 
D) Plasma is removed from blood, leaving only the solid red blood cells. 
E) Active transport moves solutes across a membrane via transport proteins. 
A) Steep concentration gradients are created. 
B) There is a transfer of heat or solute from fluids flowing in opposite directions. 
C) There is a transfer of heat or solute from fluids flowing in the same direction. 
D) Plasma is removed from blood, leaving only the solid red blood cells. 
E) Active transport moves solutes across a membrane via transport proteins.

Question 10

The surface area-to-volume ratio (S/V)can be calculated for different animals. An animal with an S/V of ________ is most likely to use its skin as its primary respiratory surface.

Accepted Answer

A) 11.3 
B) 8)6 
C) 1)23 
D) 0)12 
A) 11.3 
B) 8)6 
C) 1)23 
D) 0)12

Question 11

Which of these animals takes up O2 through its skin?

Accepted Answer

A) desert lizard 
B) bat 
C) bird 
D) frog 
E) trout 
A) desert lizard 
B) bat 
C) bird 
D) frog 
E) trout

Question 12

Compare the way most oxygen is carried in the blood with the way most carbon dioxide is carried.

Accepted Answer

Most oxygen is bound to hemogl

Exam 33: Respiration

One ________ leads to each human lung.

Carbon dioxide can be transported in the blood by all of the following methods, EXCEPT

How are birds able to get fresh air even when they are exhaling?

All respiratory systems have all of the following EXCEPT:

Gas exchange in the lungs occurs due to:

The cells that line the human respiratory passages secrete:

The respiratory system is regulated to maintain a constant level of ________ in the blood.

The respiratory center is very sensitive to changes in ________ levels, but not very sensitive to changes in ________ levels.

What happens during countercurrent exchange?

The surface area-to-volume ratio (S/V)can be calculated for different animals. An animal with an S/V of ________ is most likely to use its skin as its primary respiratory surface.

Which of these animals takes up O2 through its skin?

Compare the way most oxygen is carried in the blood with the way most carbon dioxide is carried.

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

Filters

The respiratory center is very sensitive to changes in levels, but not very sensitive to changes in levels.