Question 1

If a biologist was studying the function of carbonic anhydrase he or she would be studying which of the following?

Accepted Answer

A)  A digestive enzyme
B)  Something which is dissolved in plasma
C)  An enzyme that speeds up the conversion of carbonic acid to carbon dioxide and water
D)  An enzyme that speeds up the conversion of carbon dioxide to oxygen
E)  An enzyme that speeds up the conversion of oxyhemoglobin

Question 2

What would occur if a person had a respiratory illness that caused the lungs to have a lower PO2 and a higher PCO2 than the blood in pulmonary capillaries?

Accepted Answer

A)  The oxygen would not be able to move from the alveoli in the lungs to the bloodstream resulting in a decrease in energy levels in the body.
B)  The carbon dioxide would not be able to move from the alveoli in the lungs to the bloodstream resulting in no exchange of gases.
C)  There would be an increase exchange of carbon dioxide between the alveoli and the capillaries.This would result in large amounts of carbon dioxide moving into the alveoli.
D)  There would be an increase exchange of oxygen between the alveoli and the capillaries.This would result in large amounts of oxygen moving into the bloodstream.
E)  The change in PO2 and PCO2 levels would not have any impact on the rate of gas exchange between the alveoli and the capillaries.

Question 3

Which organisms use their exoskeleton to protect their gills?

Accepted Answer

A)  Earthworms
B)  Shrimp
C)  Bony fish
D)  Birds
E)  Hydras

Question 4

Oxygen is transported in blood most efficiently by:

Accepted Answer

A)  Being dissolved in plasma
B)  Chemical conversion to water
C)  Combining with hemoglobin
D)  Combining with carbon dioxide to form bicarbonate ions
E)  A free oxygen radical

Question 5

-This figure shows the anatomy of the human respiratory tract.What does "c" represent?

Accepted Answer

A)  The larynx
B)  The trachea
C)  A bronchiole
D)  The epiglottis
E)  The pharynx

Question 6

Trace the path of inhaled air molecules.

Accepted Answer

A)  Nasal cavity,glottis,larynx,trachea,pharynx,bronchi,bronchioles,alveoli
B)  Nasal cavity,pharynx,larynx,glottis,trachea,bronchi,bronchioles,alveoli
C)  Nasal cavity,pharynx,glottis,larynx,trachea,bronchi,bronchioles,alveoli
D)  Nasal cavity,pharynx,glottis,larynx,trachea,bronchioles,bronchi,alveoli
E)  Nasal cavity,pharynx,glottis,trachea,larynx,bronchi,bronchioles,alveoli

Question 7

-This figure shows the anatomy of the human respiratory tract.What does "a" represent?

Accepted Answer

A)  The larynx
B)  The trachea
C)  A bronchiole
D)  The epiglottis
E)  The pharynx

Question 8

The vocal cords are found in the:

Accepted Answer

A)  Bronchi
B)  Nose
C)  Larynx
D)  Lungs
E)  Pharynx

Question 9

Which respiratory organ normally allows both air and food passage?

Accepted Answer

A)  Bronchi
B)  Trachea
C)  Larynx
D)  Pharynx
E)  Nasal cavity

Question 10

Which is not a function of the respiratory tract?

Accepted Answer

A)  Warming incoming air before it reaches the lungs
B)  Moistening incoming air
C)  Filtering out dust and other particles
D)  Conducting air with higher oxygen to the lungs and carbon dioxide out
E)  Converting oxygen to carbon dioxide

Question 11

Which association is not correct?

Accepted Answer

A)  Larynx-voice box
B)  Trachea-windpipe
C)  Alveoli-gas exchange
D)  Pharynx-vocal cords
E)  Hair and mucous-nasal passages

Question 12

A biologist is studying the combination between carbon dioxide and hemoglobin.Based on this information you would conclude that he or she is studying which of the following?

Accepted Answer

A)  Carbonic hemoglobin
B)  Oxyhemoglobin
C)  Bicarbonate hemoglobin
D)  Carbon dioxide hemoglobin
E)  Carbaminohemoglobin

Question 13

Which feature is not necessary in order for external respiration to be effective?

Accepted Answer

A)  A thin surface areA.
B)  A moist surface area.
C)  A large surface area in relation to the body size.
D)  A surface area that is external to the body.
E)  A surface area that is vascular.

Question 14

If you were studying the countercurrent flow mechanism,which of the following organisms would you most likely be studying?

Accepted Answer

A)  Clams
B)  Crayfish
C)  Fish
D)  Squids
E)  Amphibians

Question 15

What will happen to a persons respiratory efficiency if they cannot form the pigment hemoglobin?

Accepted Answer

A)  There will not be any change in their efficiency.
B)  Their efficiency will increase and they will be able to carry more oxygen.
C)  Their efficiency will decrease because they cannot carry as much carbon dioxide.
D)  Their efficiency will increase because they will be able to carry more carbon dioxide.
E)  Their efficiency will decrease because they will not be able to carry as much oxygen.

Question 16

During countercurrent flow which direction does water and the blood flow?

Accepted Answer

A)  Water flows out of the gills while blood flows in the opposite direction
B)  Water flows in through the gills while blood flows in the opposite direction
C)  Water flows out of the gills while blood flows in the same direction
D)  Water flows inward across the gills while blood flows in the same direction
E)  Water flows across the surface of the lungs while blood flows in the opposite direction

Question 17

A biologist is studying organisms that have a one-way ventilation mechanism.Based on this information you would conclude that he or she is studying:

Accepted Answer

A)  Mammals
B)  Birds
C)  Reptiles
D)  Amphibians
E)  Earthworms

Question 18

Oxygen-poor blood becomes oxygen-rich blood in the:

Accepted Answer

A)  Trachea
B)  Bronchi
C)  Bronchioles
D)  Alveoli
E)  Larynx

Question 19

Which is the correct equation showing what happens when blood enters the lungs under normal circumstances?

Accepted Answer

A)  Hydrogen ions + bicarbonate ion  →\rarr→  water + carbon dioxide  →\rarr→  carbonic acid
B)  Hydrogen ions + bicarbonate ion  →\rarr→  carbonic acid  →\rarr→  water + carbon dioxide
C)  Water + carbon dioxide  →\rarr→  hydrogen ions + bicarbonate ion  →\rarr→  carbonic acid
D)  Water + carbon dioxide  →\rarr→  carbonic acid  →\rarr→  hydrogen ions + bicarbonate ion
E)  Hydrogen ions + carbon dioxide  →\rarr→  carbonic acid  →\rarr→  water + bicarbonate ion

Question 20

An athlete is trying to increase her aerobic conditioning by training more.Which aspect of respiration can she improve upon by exercising more?

Accepted Answer

A)  Ventilation
B)  Internal respiration
C)  External respiration
D)  Both internal and external respiration
E)  Both ventilation and external respiration

Exam 33: Gas Exchange and Transport in Animals

Which organisms use their exoskeleton to protect their gills?

Correct AnswerverifiedShow Answer

Which is the correct equation showing what happens when blood enters the lungs under normal circumstances?

Correct AnswerverifiedShow Answer

Trace the path of inhaled air molecules.

Correct AnswerverifiedShow Answer

An athlete is trying to increase her aerobic conditioning by training more.Which aspect of respiration can she improve upon by exercising more?

Correct AnswerverifiedShow Answer

If a biologist was studying the function of carbonic anhydrase he or she would be studying which of the following?

Correct AnswerverifiedShow Answer

The vocal cords are found in the:

Correct AnswerverifiedShow Answer

Oxygen-poor blood becomes oxygen-rich blood in the:

Correct AnswerverifiedShow Answer

Which is not a function of the respiratory tract?

Correct AnswerverifiedShow Answer

A biologist is studying the combination between carbon dioxide and hemoglobin.Based on this information you would conclude that he or she is studying which of the following?

Correct AnswerverifiedShow Answer

Which association is not correct?

Correct AnswerverifiedShow Answer

What will happen to a persons respiratory efficiency if they cannot form the pigment hemoglobin?

Correct AnswerverifiedShow Answer

Oxygen is transported in blood most efficiently by:

Correct AnswerverifiedShow Answer

What would occur if a person had a respiratory illness that caused the lungs to have a lower PO2 and a higher PCO2 than the blood in pulmonary capillaries?

Correct AnswerverifiedShow Answer

If you were studying the countercurrent flow mechanism,which of the following organisms would you most likely be studying?

Correct AnswerverifiedShow Answer

A biologist is studying organisms that have a one-way ventilation mechanism.Based on this information you would conclude that he or she is studying:

Correct AnswerverifiedShow Answer

-This figure shows the anatomy of the human respiratory tract.What does "c" represent?

Correct AnswerverifiedShow Answer

Which feature is not necessary in order for external respiration to be effective?

Correct AnswerverifiedShow Answer

During countercurrent flow which direction does water and the blood flow?

Correct AnswerverifiedShow Answer

Which respiratory organ normally allows both air and food passage?

Correct AnswerverifiedShow Answer

-This figure shows the anatomy of the human respiratory tract.What does "a" represent?

Correct AnswerverifiedShow Answer

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What would occur if a person had a respiratory illness that caused the lungs to have a lower PO₂ and a higher PCO₂ than the blood in pulmonary capillaries?

Correct Answer
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