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BIO 182 Exam 2 ALL QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
QUESTION: Imagine that a young girl suffers a horseback-riding injury, and one of her ribs
punctures her diaphragm. How will this injury affect the girl's breathing?
A. The injury will make it easier to increase negative air pressure in her chest cavity, making
inhalation easier.
B. The injury will make it more difficult to increase negative air pressure in her chest cavity,
making inhalation more difficult.
C. The injury will make it more difficult to decrease negative air pressure in her chest cavity,
making inhalation more difficult.
D. The injury will not affect her at all, as intercostal muscles are responsible for breathing. -
ANSWER-B
QUESTION: Which of the following present challenges that make gas exchange more difficult
for fish than for terrestrial animals? Select all that apply.
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, Page 2 of 27
A. Water is denser and more viscous than air.
B. Water contains much less O2 than air per unit volume.
C. Gills have less surface area than lungs.
D. Unidirectional flow of water is less efficient than tidal ventilation.
E. Diffusion occurs more slowly in water than in air. - ANSWER-A,B,E
QUESTION: In a mammal's bloodstream, where would you expect to find oxygen? Select all that
apply.
A. dissolved in blood plasma
B. attached to the heme group of myoglobin in red blood cells
C. attached to the heme groups of hemoglobin in red blood cells
D. attached to the heme group of myosin in red blood cells
E. dissolved in hemolymph - ANSWER-A,C
QUESTION: If the partial pressure of oxygen (pO2) in a man's blood plasma decreased below
that in his red blood cells, what would be the result?
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, Page 3 of 27
A. More oxygen would diffuse into his red blood cells and be transported throughout his body.
B. Oxygen would diffuse out of his red blood cells, and less oxygen would be transported
throughout his body.
C. The concentration of oxygen would be the same in red blood cells and blood plasma. -
ANSWER-B
QUESTION: As fluid moves through a vessel, which factors determine the flow resistance?
(Select all that apply.)
A. the radius of the vessel
B. the pressure exerted by the heart
C. the length of the vessel
D. the viscosity of the fluid - ANSWER-A,C,D
QUESTION: In which of the following animals does blood flow directly from respiratory organs
to tissues without first returning to the heart?
A. fish
3
BIO 182 Exam 2 ALL QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
QUESTION: Imagine that a young girl suffers a horseback-riding injury, and one of her ribs
punctures her diaphragm. How will this injury affect the girl's breathing?
A. The injury will make it easier to increase negative air pressure in her chest cavity, making
inhalation easier.
B. The injury will make it more difficult to increase negative air pressure in her chest cavity,
making inhalation more difficult.
C. The injury will make it more difficult to decrease negative air pressure in her chest cavity,
making inhalation more difficult.
D. The injury will not affect her at all, as intercostal muscles are responsible for breathing. -
ANSWER-B
QUESTION: Which of the following present challenges that make gas exchange more difficult
for fish than for terrestrial animals? Select all that apply.
1
, Page 2 of 27
A. Water is denser and more viscous than air.
B. Water contains much less O2 than air per unit volume.
C. Gills have less surface area than lungs.
D. Unidirectional flow of water is less efficient than tidal ventilation.
E. Diffusion occurs more slowly in water than in air. - ANSWER-A,B,E
QUESTION: In a mammal's bloodstream, where would you expect to find oxygen? Select all that
apply.
A. dissolved in blood plasma
B. attached to the heme group of myoglobin in red blood cells
C. attached to the heme groups of hemoglobin in red blood cells
D. attached to the heme group of myosin in red blood cells
E. dissolved in hemolymph - ANSWER-A,C
QUESTION: If the partial pressure of oxygen (pO2) in a man's blood plasma decreased below
that in his red blood cells, what would be the result?
2
, Page 3 of 27
A. More oxygen would diffuse into his red blood cells and be transported throughout his body.
B. Oxygen would diffuse out of his red blood cells, and less oxygen would be transported
throughout his body.
C. The concentration of oxygen would be the same in red blood cells and blood plasma. -
ANSWER-B
QUESTION: As fluid moves through a vessel, which factors determine the flow resistance?
(Select all that apply.)
A. the radius of the vessel
B. the pressure exerted by the heart
C. the length of the vessel
D. the viscosity of the fluid - ANSWER-A,C,D
QUESTION: In which of the following animals does blood flow directly from respiratory organs
to tissues without first returning to the heart?
A. fish
3
