Gas Transport and Acid Base Questions

1. Carbon dioxide is more soluble in water than oxygen. To get the same amount of oxygen to dissolve in plasma as carbon dioxide, you would have to (Points : 1) |

       increase the temperature of the plasma.

       increase the partial pressure of oxygen.

       decrease the partial pressure of carbon dioxide.

       increase the rate of plasma flow through the lungs.

       either increase the partial pressure of oxygen or decrease the partial pressure of carbon dioxide

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Question 2.2. For maximum loading of hemoglobin with oxygen at the lungs, the (Points : 1) |

       PCO2 should be high

       pH should be slightly acidic.

       PO2 should be about 70 mm Hg.

       DPG levels in the red blood cells should be high.

       PCO2 should be low.

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Question 3.3. Carbonic anhydrase (Points : 1) |

       is in RBCs.

       is an enzyme.

       can increase the amount of bicarbonate ion in plasma.

       can decrease the amount of bicarbonate ion in plasma.

       all of these

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Question 4.4. Which of the following would be greater? (Points : 1) |

       the percent of oxygen saturation of hemoglobin when the pH is 7.6

       the percent of oxygen saturation of hemoglobin when the pH is 7.2

       Neither is greater.

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Question 5.5. Which of the following would be greater? (Points : 1) |

       the percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade

       the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade

       Neither is greater.

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Question 6.6. Which of the following would be greater? (Points : 1) |

       hemoglobin's affinity for oxygen when the 2,3-DPG level is high

       hemoglobin's affinity for oxygen when the 2,3-DPG level is low

       Neither is greater.

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Question 7.7. At a PO2 of 70 mm Hg and normal temperature and pH, hemoglobin is ________ percent saturated with oxygen. (Points : 1) |

       10

       25

       50...