Question 1

Air leaving the lungs has

Accepted Answer

A) a higher concentration of both oxygen and carbon dioxide than outside air. 
B) a lower concentration of oxygen and a higher concentration of carbon dioxide than outside air. 
C) equal concentrations of carbon dioxide and oxygen. 
D) a lower concentration of oxygen and a lower concentration of carbon dioxide than outside air. 
A) a higher concentration of both oxygen and carbon dioxide than outside air. 
B) a lower concentration of oxygen and a higher concentration of carbon dioxide than outside air. 
C) equal concentrations of carbon dioxide and oxygen. 
D) a lower concentration of oxygen and a lower concentration of carbon dioxide than outside air.

Question 2

If an individual has bronchitis, it may also be accurately referred to as an upper-respiratory infection.

Accepted Answer

A) True 
 B)False

Question 3

Where would you expect hemoglobin to release oxygen?

Accepted Answer

A) inside an alveolus 
B) near red blood cells that are undergoing cellular respiration 
C) at the terminal ends of bronchioles 
D) near body cells that are undergoing cellular respiration 
A) inside an alveolus 
B) near red blood cells that are undergoing cellular respiration 
C) at the terminal ends of bronchioles 
D) near body cells that are undergoing cellular respiration

Question 4

Erythropoietin (EPO), which is made by the kidneys, is involved in the production of white blood cells that carry oxygen throughout the body.

Accepted Answer

A) True 
 B)False

Question 5

____________________ is the process of expelling carbon dioxide from the lungs and taking oxygen into the lungs.

Accepted Answer

The answer of ____________________ is the process of expelling carbon...

Question 6

The thickening of heart muscle over time helps it to pump blood more efficiently throughout the body.

Accepted Answer

A) True 
 B)False

Question 7

Once oxygen has entered the blood stream, its ultimate destination is the

Accepted Answer

A) alveoli. 
B) lungs. 
C) cells. 
D) mitochondria. 
A) alveoli. 
B) lungs. 
C) cells. 
D) mitochondria.

Question 8

In cystic fibrosis, parts of the respiratory tract can be clogged with mucus and inhibit gas exchange. The areas of the respiratory tract where gases are directly exchanged are the

Accepted Answer

A) alveoli. 
B) bronchi. 
C) diaphragm. 
D) trachea. 
A) alveoli. 
B) bronchi. 
C) diaphragm. 
D) trachea.

Question 9

For a human to inhale, the rib muscles and diaphragm must

Accepted Answer

A) contract, decreasing pressure inside the lungs. 
B) relax, increasing pressure inside the lungs. 
C) contract, increasing pressure inside the lungs. 
D) relax, decreasing pressure inside the lungs. 
A) contract, decreasing pressure inside the lungs. 
B) relax, increasing pressure inside the lungs. 
C) contract, increasing pressure inside the lungs. 
D) relax, decreasing pressure inside the lungs.

Question 10

Which of the following statements about the size of an organism's gas exchange surface is true?

Accepted Answer

A) Organisms with small demands generally still have large gas exchange surfaces. 
B) Extra gill surface area in a fish would help lower the drag forces in water. 
C) The surface area of a gas exchange surface is sized to match the needs of the organism. 
D) The lungs of active mammals have smaller gas exchange surfaces than the lungs of less active mammals. 
A) Organisms with small demands generally still have large gas exchange surfaces. 
B) Extra gill surface area in a fish would help lower the drag forces in water. 
C) The surface area of a gas exchange surface is sized to match the needs of the organism. 
D) The lungs of active mammals have smaller gas exchange surfaces than the lungs of less active mammals.

Question 11

In the figure of veins below, the blood clot could move to the lungs and cause a ____________________.

Accepted Answer

pulmonary

Question 12

The human ____________________ system is used for the internal transport of oxygen and carbon dioxide.

Accepted Answer

The answer of The human ____________________ system is used for...

Question 13

The higher the gas concentration in the environment relative to the gas concentration inside an organism, the more quickly the gas will passively enter the organism.

Accepted Answer

A) True 
 B)False

Question 14

Low platelet count has no effect on bleeding risk.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following would contain the lowest concentration of oxygen?

Accepted Answer

A) a lake covered by a sheet of ice 
B) air at sea level 
C) air in a refrigerator 
D) a pond during summer 
A) a lake covered by a sheet of ice 
B) air at sea level 
C) air in a refrigerator 
D) a pond during summer

Question 16

Which of the following would have the smallest diameter?

Accepted Answer

A) the pharynx 
B) the trachea 
C) the bronchi 
D) the bronchioles 
A) the pharynx 
B) the trachea 
C) the bronchi 
D) the bronchioles

Question 17

The figure below illustrates body size and diffusion time.  
Which of the following examples represents the quickest diffusion time?

Accepted Answer

A) Small insect; insects have high metabolisms, thus diffusion occurs quickly. 
B) Giraffe; tall animals generate a lot of heat energy, which allows diffusion to occur quickly. 
C) Cell; it has the shortest distance across. Diffusion slows over longer distances. 
D) Human; omnivores have more complex metabolic chemistry, which requires higher diffusion rates. 
A) Small insect; insects have high metabolisms, thus diffusion occurs quickly. 
B) Giraffe; tall animals generate a lot of heat energy, which allows diffusion to occur quickly. 
C) Cell; it has the shortest distance across. Diffusion slows over longer distances. 
D) Human; omnivores have more complex metabolic chemistry, which requires higher diffusion rates.

Question 18

Unlike aquatic organisms, humans have their gas exchange surfaces on the inside rather than the outside. This adaptation evolved to

Accepted Answer

A) reduce water loss during gas exchange. 
B) allow better uptake of carbon dioxide. 
C) prevent the loss of oxygen during gas exchange. 
D) allow more efficient production of carbohydrates. 
A) reduce water loss during gas exchange. 
B) allow better uptake of carbon dioxide. 
C) prevent the loss of oxygen during gas exchange. 
D) allow more efficient production of carbohydrates.

Question 19

Human red blood cells contain the red pigment ____________________.

Accepted Answer

The answer of Human red blood cells contain the red...

Question 20

Air enters the lungs through a pair of tubes known as

Accepted Answer

A) bronchi. 
B) alveoli. 
C) bronchioles. 
D) pharynx. 
A) bronchi. 
B) alveoli. 
C) bronchioles. 
D) pharynx.

Exam 28: Circulation and Gas Exchange

Air leaving the lungs has

If an individual has bronchitis, it may also be accurately referred to as an upper-respiratory infection.

Where would you expect hemoglobin to release oxygen?

Erythropoietin (EPO), which is made by the kidneys, is involved in the production of white blood cells that carry oxygen throughout the body.

____________________ is the process of expelling carbon dioxide from the lungs and taking oxygen into the lungs.

The thickening of heart muscle over time helps it to pump blood more efficiently throughout the body.

Once oxygen has entered the blood stream, its ultimate destination is the

In cystic fibrosis, parts of the respiratory tract can be clogged with mucus and inhibit gas exchange. The areas of the respiratory tract where gases are directly exchanged are the

For a human to inhale, the rib muscles and diaphragm must

Which of the following statements about the size of an organism's gas exchange surface is true?

In the figure of veins below, the blood clot could move to the lungs and cause a ____________________.

The human ____________________ system is used for the internal transport of oxygen and carbon dioxide.

The higher the gas concentration in the environment relative to the gas concentration inside an organism, the more quickly the gas will passively enter the organism.

Low platelet count has no effect on bleeding risk.

Which of the following would contain the lowest concentration of oxygen?

Which of the following would have the smallest diameter?

The figure below illustrates body size and diffusion time. Which of the following examples represents the quickest diffusion time?

Unlike aquatic organisms, humans have their gas exchange surfaces on the inside rather than the outside. This adaptation evolved to

Human red blood cells contain the red pigment ____________________.

Air enters the lungs through a pair of tubes known as

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