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Chapter 22 Quiz
Return to Animal Physiology 4e Student Resources
Chapter 22 Quiz
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*
not completed
.
The respiratory gas(es) is(are)
oxygen.
correct
incorrect
carbon dioxide.
correct
incorrect
nitrogen.
correct
incorrect
both oxygen and carbon dioxide.
correct
incorrect
*
not completed
.
In diffusion, materials tend to move in net fashion from regions of
high solubility to regions of low solubility.
correct
incorrect
high chemical potential to regions of low chemical potential.
correct
incorrect
low chemical potential to regions of high chemical potential.
correct
incorrect
low partial pressure to regions of high partial pressure.
correct
incorrect
*
not completed
.
If the partial pressures of nitrogen, argon, and CO
2
are 0.7808, 0.0093, and 0.0004 atm, respectively, in air at 1 atm, what is the partial pressure of the oxygen in this air?
0.2095%
correct
incorrect
20.95%
correct
incorrect
0.2095 atm
correct
incorrect
20.95 atm
correct
incorrect
*
not completed
.
Consider two gas mixtures at the same temperature. If the concentration of CO
2
in Mixture A is 10 mmol/L and the concentration of CO
2
in Mixture B is 30 mmol/L, which statement is also true?
The partial pressure of CO
2
in Mixture B is 3 times as high as in Mixture A.
correct
incorrect
The partial pressure of CO
2
in Mixture B is 3 times lower compared to Mixture A.
correct
incorrect
The percent of CO
2
in Mixture B is 3 times as high as in Mixture A.
correct
incorrect
The percent of CO
2
is the same in both mixtures.
correct
incorrect
*
not completed
.
_______ is the law that relates partial pressure and concentration in aqueous solutions.
The universal gas law
correct
incorrect
The partial pressure law
correct
incorrect
Henry's law
correct
incorrect
Krogh's law
correct
incorrect
*
not completed
.
What is the relationship between temperature and the solubility of gases in aqueous solutions?
The solubility of gases in aqueous solution has an exponential relationship to temperature.
correct
incorrect
As temperature increases, the solubility of gases in aqueous solutions increases.
correct
incorrect
As temperature increases, the solubility of gases in aqueous solutions decreases.
correct
incorrect
The solubility of a gas in an aqueous solution is directly proportional to temperature.
correct
incorrect
*
not completed
.
Gases diffuse in net fashion from areas of relatively high partial pressure to areas of relatively low partial pressure
within gas mixtures.
correct
incorrect
within aqueous solutions.
correct
incorrect
across gas–water interfaces.
correct
incorrect
in all combinations of gas–aqueous phases.
correct
incorrect
*
not completed
.
Which statement regarding the water beetle is true?
As oxygen in the bubble is used up, oxygen diffuses from the water into the bubble.
correct
incorrect
As CO
2
in the bubble increases, it causes oxygen to enter the bubble more readily.
correct
incorrect
As the beetle dives, the increase in pressure drives oxygen into the beetle.
correct
incorrect
The nitrogen in the bubble is responsible for maintaining the oxygen concentration.
correct
incorrect
*
not completed
.
During gas diffusion, as the distance between
P
1
and
P
2
increases, the
rate of net movement decreases.
correct
incorrect
rate of net movement increases.
correct
incorrect
rate of net movement does not change.
correct
incorrect
diffusion coefficient increases.
correct
incorrect
*
not completed
.
Which statement regarding gas diffusion is true?
Gases diffuse only slightly faster through the gas phase than through aqueous solutions.
correct
incorrect
Gases diffuse many times faster through the gas phase than through aqueous solutions.
correct
incorrect
Gases diffuse at equal rates through the gas phase and aqueous solutions.
correct
incorrect
Gases diffuse only slightly slower through the gas phase than through aqueous solutions.
correct
incorrect
*
not completed
.
Oxygen that is bound to hemoglobin
does not contribute to the oxygen partial pressure.
correct
incorrect
contributes the same amount to partial pressure as when it is dissolved in solution.
correct
incorrect
contributes more to partial pressure than when it is dissolved in solution.
correct
incorrect
increases the partial pressure of CO
2
.
correct
incorrect
*
not completed
.
As a gas mixture or an aqueous solution flows, gas molecules in the gas or liquid are carried from place to place by
tidal flow.
correct
incorrect
diffusion.
correct
incorrect
evaporation.
correct
incorrect
convection.
correct
incorrect
*
not completed
.
Movement of air into and out of a human lung is an example of
diffusion.
correct
incorrect
Henry's law.
correct
incorrect
unidirectional flow.
correct
incorrect
tidal flow.
correct
incorrect
*
not completed
.
Oxygen transport in animals occurs by
diffusion.
correct
incorrect
convection.
correct
incorrect
active transport.
correct
incorrect
both convection and diffusion.
correct
incorrect
*
not completed
.
In oxygen transport to the mitochondria, diffusion occurs from
the mouth to the lungs.
correct
incorrect
the lungs to the red blood cells.
correct
incorrect
the red blood cells to the mitochondria.
correct
incorrect
both the lungs to the red blood cells and the red blood cells to the mitochondria.
correct
incorrect
*
not completed
.
Which O
2
partial pressure value would you expect to find in the ambient air (AA), arterial blood (AB), and systemic capillary blood (SCB) of an animal?
AA = 150 mm Hg; AB = 100 mm Hg; SCB = 70 mm Hg
correct
incorrect
AA = 150 mm Hg; AB = 70 mm Hg; SCB = 100 mm Hg
correct
incorrect
AA = 70 mm Hg; AB = 100 mm Hg; SCB = 70 mm Hg
correct
incorrect
AA = 70 mm Hg; AB = 100 mm Hg; SCB = 150 mm Hg
correct
incorrect
*
not completed
.
At standard conditions of temperature and pressure (STP),
1 mg of gas occupies 22.4 L.
correct
incorrect
1 mole of gas occupies 22.4 L.
correct
incorrect
22.4 moles of gas occupies 1 L.
correct
incorrect
22.4 grams of gas occupies 1 L.
correct
incorrect
*
not completed
.
Which statement regarding air and water is
false
?
Water is more viscous than air.
correct
incorrect
Air-breathing animals generally expend more energy ventilating than water-breathing animals.
correct
incorrect
Per unit volume, water holds less oxygen than air.
correct
incorrect
Temperature affects the oxygen solubility in water more than it does in air.
correct
incorrect
*
not completed
.
If the percentage of oxygen in air at sea level is 20.95%, what is the percentage of oxygen in air at the top of Mount Everest?
Significantly higher than 20.95%
correct
incorrect
The same—20.95%
correct
incorrect
Significantly lower than 20.95%
correct
incorrect
Negligible—close to 0%
correct
incorrect
*
not completed
.
Which organisms use CO
2
during the day?
Fungi
correct
incorrect
Animals
correct
incorrect
Plants
correct
incorrect
Bacteria
correct
incorrect
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