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BIOL 2402 FINAL EXAM REVIEW 2026
LATEST QUESTIONS AND ANSWERS|
ACE YOUR GRADES.
The partial pressure of oxygen that stimulates the respiratory
areas is ___ of normal.
A. 33%
B. 50%
C. 67%
D. 80%
E. 100% - correct answer -B. 50%
Hyperventilation is usually accompanied by a(n)
A. decrease in blood CO2 concentration and a drop in pH.
B. decrease in blood CO2 concentration and a rise in pH.
C. increase in blood CO2 concentration and a drop in pH.
D. increase in blood CO2 concentration and a rise in pH.
E. increase in hemoglobin content of the blood. - correct answer
-B. decrease in blood CO2 concentration and a rise in pH.
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The amount of oxygen released from oxyhemoglobin increases
when
A. carbon dioxide concentration decreases.
B. carbon dioxide concentration increases.
C. temperature decreases.
D. blood becomes more alkaline.
E. the moon is full. - correct answer -B. carbon dioxide
concentration increases.
Which of the following proteins transports some carbon dioxide in
the blood?
A. Hemoglobin
B. Carbonic anhydrase
C. Heme
D. Albumin
E. Ferritin - correct answer -A. Hemoglobin
Globin is
A. another term for alveolus.
B. a fat that carries oxygen in the blood.
C. a form of surfactant.
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D. the protein part of hemoglobin, which carries oxygen in the
blood.
E. a type of microorganism that infects the lungs, especially in
people who have cystic fibrosis. - correct answer -D. the protein
part of hemoglobin, which carries oxygen in the blood.
Changes in the respiratory system that accompany aging are
A. thickened mucus.
B. slowed swallowing reflex.
C. macrophages become less efficient at keeping bacteria out.
D. cilia become less active or vanish.
E. all of the above. - correct answer -E. all of the above.
In emphysema
A. pressure in alveoli increases and their walls burst, coalescing
them and decreasing the surface area for gas exchange.
B. cells in the bronchial lining divide too fast.
C. tar from cigarettes blackens alveoli.
D. the respiratory system gradually fails due to too little mucus
and thinning of the bronchial lining.
E. membranes form within alveoli, increasing surface area. -
correct answer -A. pressure in alveoli increases and their walls
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burst, coalescing them and decreasing the surface area for gas
exchange.
In October 2001 at the site of the World Trade Center in New
York City, fires were still burning from the terrorist attacks that had
brought down the buildings. The greatest danger to the
respiratory system was
A. the odor.
B. very small particles of debris.
C. very large particles of debris.
D. falling material from damaged buildings.
E. all of the people smoking cigarettes. - correct answer -B. very
small particles of debris.
During an asthma attack, the patient usually finds it most difficult
to
A. exhale.
B. inhale.
C. contract the respiratory muscles.
D. expand the lungs.
E. sneeze. - correct answer -A. exhale.
BIOL 2402 FINAL EXAM REVIEW 2026
LATEST QUESTIONS AND ANSWERS|
ACE YOUR GRADES.
The partial pressure of oxygen that stimulates the respiratory
areas is ___ of normal.
A. 33%
B. 50%
C. 67%
D. 80%
E. 100% - correct answer -B. 50%
Hyperventilation is usually accompanied by a(n)
A. decrease in blood CO2 concentration and a drop in pH.
B. decrease in blood CO2 concentration and a rise in pH.
C. increase in blood CO2 concentration and a drop in pH.
D. increase in blood CO2 concentration and a rise in pH.
E. increase in hemoglobin content of the blood. - correct answer
-B. decrease in blood CO2 concentration and a rise in pH.
, Page | 2
The amount of oxygen released from oxyhemoglobin increases
when
A. carbon dioxide concentration decreases.
B. carbon dioxide concentration increases.
C. temperature decreases.
D. blood becomes more alkaline.
E. the moon is full. - correct answer -B. carbon dioxide
concentration increases.
Which of the following proteins transports some carbon dioxide in
the blood?
A. Hemoglobin
B. Carbonic anhydrase
C. Heme
D. Albumin
E. Ferritin - correct answer -A. Hemoglobin
Globin is
A. another term for alveolus.
B. a fat that carries oxygen in the blood.
C. a form of surfactant.
, Page | 3
D. the protein part of hemoglobin, which carries oxygen in the
blood.
E. a type of microorganism that infects the lungs, especially in
people who have cystic fibrosis. - correct answer -D. the protein
part of hemoglobin, which carries oxygen in the blood.
Changes in the respiratory system that accompany aging are
A. thickened mucus.
B. slowed swallowing reflex.
C. macrophages become less efficient at keeping bacteria out.
D. cilia become less active or vanish.
E. all of the above. - correct answer -E. all of the above.
In emphysema
A. pressure in alveoli increases and their walls burst, coalescing
them and decreasing the surface area for gas exchange.
B. cells in the bronchial lining divide too fast.
C. tar from cigarettes blackens alveoli.
D. the respiratory system gradually fails due to too little mucus
and thinning of the bronchial lining.
E. membranes form within alveoli, increasing surface area. -
correct answer -A. pressure in alveoli increases and their walls
, Page | 4
burst, coalescing them and decreasing the surface area for gas
exchange.
In October 2001 at the site of the World Trade Center in New
York City, fires were still burning from the terrorist attacks that had
brought down the buildings. The greatest danger to the
respiratory system was
A. the odor.
B. very small particles of debris.
C. very large particles of debris.
D. falling material from damaged buildings.
E. all of the people smoking cigarettes. - correct answer -B. very
small particles of debris.
During an asthma attack, the patient usually finds it most difficult
to
A. exhale.
B. inhale.
C. contract the respiratory muscles.
D. expand the lungs.
E. sneeze. - correct answer -A. exhale.
