Biol 320 Final Exam
BIOL 320 FINAL EXAM NEWEST 2025 ACTUAL EXAM
COMPLETE QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
1. What are para-nasal sinuses?
a. small hollow spaces in the bones around the nose.
b. bony structures inside the nose
c. the top part of the pharynx
d. part of the vocal cord and larynx
a. small hollow spaces in the bones around the nose.
2. Which of the following statement best describe the internal respiration:
a. taking O2 into the lung and releasing CO2 from the lung
b. O2 is released to the tissues and CO2 is absorbed by the blood in the alveoli
c. O2 is utilized in metabolic processes to produce energy in the cell
d. All the above
b. O2 is released to the tissues and CO2 is absorbed by the blood in the alveoli
3. Which of the following two parts of the pharynx serve as a passageway for both the air and
food.
a. Nasopharynx and oropharynx
b. Nasopharynx and laryngopharynx
c. oropharynx and laryngopharynx
d. None of the above
c. oropharynx and laryngopharynx
4. Which of the following are structural features of the trachea?
a. C-shaped cartilage
b. smooth muscle fibers
c. pseudostratified ciliated columnar epithelium
d. all of the above
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, Biol 320 Final Exam
d. all of the above
5.Warming up the air is important, especially I the winter, which part of the upper respiratory
system is responsible for this function
a. the nose
b. the pharynx
c. the paranasal sinuses
d. the larynx
c. the paranasal sinuses
6. The pleura that surrounds the lungs consists of two layers, the ________.
a. visceral and parietal pleurae.
b. mediastinum and parietal pleurae.
c. visceral and mediastinum pleurae.
d. none of the above
a. visceral and parietal pleurae.
7. Which of the following processes does atmospheric pressure play a role in?
a. production of pulmonary surfactant
b. pulmonary ventilation/ breathing
c. resistance
d. surface tension
b. pulmonary ventilation/ breathing
8. Which of the following statement best describe alveolar type one (AT1) cells.
a. secret Secrete pulmonary surfactant and reduces surface tension
b. phagocytic cells that remove debris and pathogens
c. simple squamous epithelial cells, permeable to gases and allow gas exchange
d. produce mucus in the trachea wall
c. simple squamous epithelial cells, permeable to gases and allow gas exchange
9. In some diseases such as emphysema, a sever reduction in which type of cells can severally
suppress the process of gas exchange in the lung.
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, Biol 320 Final Exam
a. alveolar type 1 (AT 1) cells
b. goblet cells
c. alveolar type 2 (AT2) cells
d. ciliated epithelial cells
a. alveolar type 1 (AT 1) cells
10. Which of the following cell types is considered as progenitor cell and why?
a. Goblet cells since they differentiate into alveolar type 1 (AT1) cells
b. alveolar type 2 (AT2) cells since they differentiate into alveolar type 1 (AT1) cells
c. alveolar type 1 (AT1) cells since they differentiate into alveolar type 2 (AT2) cells
d. both AT1 and AT2 cells are progenitor cells
b. alveolar type 2 (AT2) cells since they differentiate into alveolar type 1 (AT1) cells
11. Work of breathing is increased ____________
a. in old people where pulmonary compliance is decreased.
b. when elastic recoil (lung elasticity) is increased.
c. when the amount of mucus that causes airway resistance is decreased.
d. during your sleep in the bed.
a. in old people where pulmonary compliance is decreased.
12. Suppose that the PO2 in the alveoli is 100 mm Hg, PO2 in the RBC should _____ for O2
loading (i.e., binding of O2 to Hemoglobin) to occur
a. more that 100 mm Hg
b. less than 100 mm Hg
c. equal to 100 mm Hg
d. None of the above
b. less than 100 mm Hg
13. Contraction of the external intercostal muscles causes which of the following to occur?
a. the diaphragm moves downward.
b. the rib cage is compressed.
c. the ribs and sternum move upward and thoracic cavity increases
d. the thoracic cavity volume decreases.
3|Page
BIOL 320 FINAL EXAM NEWEST 2025 ACTUAL EXAM
COMPLETE QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
1. What are para-nasal sinuses?
a. small hollow spaces in the bones around the nose.
b. bony structures inside the nose
c. the top part of the pharynx
d. part of the vocal cord and larynx
a. small hollow spaces in the bones around the nose.
2. Which of the following statement best describe the internal respiration:
a. taking O2 into the lung and releasing CO2 from the lung
b. O2 is released to the tissues and CO2 is absorbed by the blood in the alveoli
c. O2 is utilized in metabolic processes to produce energy in the cell
d. All the above
b. O2 is released to the tissues and CO2 is absorbed by the blood in the alveoli
3. Which of the following two parts of the pharynx serve as a passageway for both the air and
food.
a. Nasopharynx and oropharynx
b. Nasopharynx and laryngopharynx
c. oropharynx and laryngopharynx
d. None of the above
c. oropharynx and laryngopharynx
4. Which of the following are structural features of the trachea?
a. C-shaped cartilage
b. smooth muscle fibers
c. pseudostratified ciliated columnar epithelium
d. all of the above
1|Page
, Biol 320 Final Exam
d. all of the above
5.Warming up the air is important, especially I the winter, which part of the upper respiratory
system is responsible for this function
a. the nose
b. the pharynx
c. the paranasal sinuses
d. the larynx
c. the paranasal sinuses
6. The pleura that surrounds the lungs consists of two layers, the ________.
a. visceral and parietal pleurae.
b. mediastinum and parietal pleurae.
c. visceral and mediastinum pleurae.
d. none of the above
a. visceral and parietal pleurae.
7. Which of the following processes does atmospheric pressure play a role in?
a. production of pulmonary surfactant
b. pulmonary ventilation/ breathing
c. resistance
d. surface tension
b. pulmonary ventilation/ breathing
8. Which of the following statement best describe alveolar type one (AT1) cells.
a. secret Secrete pulmonary surfactant and reduces surface tension
b. phagocytic cells that remove debris and pathogens
c. simple squamous epithelial cells, permeable to gases and allow gas exchange
d. produce mucus in the trachea wall
c. simple squamous epithelial cells, permeable to gases and allow gas exchange
9. In some diseases such as emphysema, a sever reduction in which type of cells can severally
suppress the process of gas exchange in the lung.
2|Page
, Biol 320 Final Exam
a. alveolar type 1 (AT 1) cells
b. goblet cells
c. alveolar type 2 (AT2) cells
d. ciliated epithelial cells
a. alveolar type 1 (AT 1) cells
10. Which of the following cell types is considered as progenitor cell and why?
a. Goblet cells since they differentiate into alveolar type 1 (AT1) cells
b. alveolar type 2 (AT2) cells since they differentiate into alveolar type 1 (AT1) cells
c. alveolar type 1 (AT1) cells since they differentiate into alveolar type 2 (AT2) cells
d. both AT1 and AT2 cells are progenitor cells
b. alveolar type 2 (AT2) cells since they differentiate into alveolar type 1 (AT1) cells
11. Work of breathing is increased ____________
a. in old people where pulmonary compliance is decreased.
b. when elastic recoil (lung elasticity) is increased.
c. when the amount of mucus that causes airway resistance is decreased.
d. during your sleep in the bed.
a. in old people where pulmonary compliance is decreased.
12. Suppose that the PO2 in the alveoli is 100 mm Hg, PO2 in the RBC should _____ for O2
loading (i.e., binding of O2 to Hemoglobin) to occur
a. more that 100 mm Hg
b. less than 100 mm Hg
c. equal to 100 mm Hg
d. None of the above
b. less than 100 mm Hg
13. Contraction of the external intercostal muscles causes which of the following to occur?
a. the diaphragm moves downward.
b. the rib cage is compressed.
c. the ribs and sternum move upward and thoracic cavity increases
d. the thoracic cavity volume decreases.
3|Page
