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BIO 219 – PFW: Questions With Solutions
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BIO 219 – PFW: Questions With SolutionsThe ____ cells are most sensitive to reduced O2 levels.
a. heart
b. kidney
c. liver
d. brain
e. pancreatic Right Ans - d
As elevation increases, O2 ____.
a. availability increases
b. availability decreases
c. availability remains constant
d. levels increase, but there is none present above 20,000 feet
e. levels decrease, until there is none present above 20,000 feet Right Ans -
b
Planes maintain an atmospheric pressure equivalent to about 8,000 feet to
sustain ____.
a. a stable temperature
b. oxygen levels
c. oxygen availability
d. oxygen levels and availability
e. oxygen availability and reduce buildup of carbon dioxide Right Ans - c
Amphibians often use ____ as a respiratory surface.
a. skin
b. a tracheal system
c. internal gills
d. external gills
e. scales Right Ans - a
In humans, ____ is involved in both cellular and physiological respiration.
a. the circulatory system
,b. the respiratory surface
c. mitochondria
d. the respiratory medium
e. blood Right Ans - a
O2 is transported from air in the lungs into the blood through the process of
____.
a. active transport
b. simple diffusion
c. facilitated diffusion
d. osmosis
e. active transport Right Ans - b
Diffusion of respiratory gases is enhanced by ____.
a. a large surface area
b. a thick epithelial layer
c. cool temperatures
d. the presence of active transport pumps
e. the presence of carbon dioxide Right Ans - a
The ____ are respiratory structures composed of moist evaginations.
a. tracheal tubes
b. lungs
c. gills
d. skin
e. nasal passages Right Ans - c
The ____ are air-filled respiratory system structures common in insects.
a. gills
b. tracheal tubes
c. lungs
d. integumentary surfaces
e. air sacs Right Ans - b
, The process of ____ is the exchange of gases between a respiratory surface and
the circulatory system.
a. ventilation
b. cellular respiration
c. perfusion
d. bulk flow
e. physiological respiration Right Ans - e
The ____ represent an internal respiratory system.
a. skin folds on an amphibian
b. broad, flat body of a flatworm
c. branched gill filaments
d. folds within human lungs
e. gills on a salamander Right Ans - d
Why is proper ventilation important for a respiring animal?
a. It directly increases gas exchange between the blood and cells.
b. It maintains proper O2 and CO2 levels on the external side of the
respiratory surface so diffusion across it can be maintained.
c. It maintains blood circulation within the body of an animal.
d. It maintains proper O2 and CO2 levels on the internal side of the respiratory
surface so diffusion across it can be maintained.
e. It directly maintains proper O2 and CO2 levels in tissues. Right Ans - b
In aquatic animals, the most disadvantaged in terms of respiratory media are
those living in ____.
a. cold saltwater
b. cold freshwater
c. warm saltwater
d. warm freshwater
e. warm brackish water Right Ans - c
Water is an optimal respiratory medium because ____.
a. water holds less O2 than air
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