11. When Po, is 100 mg Hg, the oxygen concentration in water is: (1pt) lower tha
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Question
11. When Po, is 100 mg Hg, the oxygen concentration in water is: (1pt) lower than oxygen concentration in air and lower than the concentration of CO2 in water at the same partial pressure. lower than oxygen concentration in air and higher than the concentration of Co2 in water at the same partial pressure. higher than oxygen concentration in air and lower than the concentration of CO2 in water at the same partial pressure higher than oxygen concentration in air and higher than the concentration of CO2 in water at the same partial pressure. none of the above A. B. C. D. E.Explanation / Answer
11. B
The oxygen concentration in water is lower than the oxygen concentration in the air and higher than the concentration of carbon-dioxide in water at the same partial pressure.
18. B
Decreased pH results from the increase of carbon-dioxide in the peripheral tissues. Increased carbon-dioxide indicates that the surrounding tissues need oxygen. So, reduced pH will make the hemoglobin to release oxygen.
19. The phenomenon described in the above answer is called as Bohr effect. Bohr explained that the binding affinity of oxygen to the hemoglobin depends on the low pH and high concentration of carbon dioxide.
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