27. Figure 5 shows oxyhemoglobin dissociatlon curves at pH 7.2 and pH 7.4. Which of the following is true at PO2 less than 40 mm Hg? % saturation of haemogiobin 100 + 80 + pH 7.4 60 pH 7.2 40 20 + 10 20 30 40 50 60 70 Po; (mm Hg) Figure 5 A. Hemoglobin retains less O2 at pH 7.4 compared to pH 7.2. B. Hemoglobin retains less O2 at pH 7.2 compared to pH 7.4. C. The release of O2 from hemoglobin is not influenced by the production of CO2. D. At pH 7.2 where CO2 production is les than pH 7.4, hemoglobin releases less O2.

Biology: The Dynamic Science (MindTap Course List)
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Chapter46: Gas Exchange: The Respiratory System
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Figure 5 shows oxyhemoglobin dissociatlon curves at pH 7.2 and pH 7.4. Which of the
following is true at PO2 less than 40 mm Hg?
27.
% saturation af
haemogiobin
100
pH 7.4
80
60
pH 7.2
40 +
20
10
20
30
40
50
60
70
Po; (mm Hg)
Figure 5
A. Hemoglobin retains less O2 at pH 7.4 compared to pH 7.2.
B. Hemoglobin retains less O2 at pH 7.2 compared to pH 7.4.
C. The release of O2 from hemoglobin is not influenced by the production of CO2.
D. At pH 7.2 where CO2 production is less than pH 7.4, hemoglobin releases less O2.
Transcribed Image Text:Figure 5 shows oxyhemoglobin dissociatlon curves at pH 7.2 and pH 7.4. Which of the following is true at PO2 less than 40 mm Hg? 27. % saturation af haemogiobin 100 pH 7.4 80 60 pH 7.2 40 + 20 10 20 30 40 50 60 70 Po; (mm Hg) Figure 5 A. Hemoglobin retains less O2 at pH 7.4 compared to pH 7.2. B. Hemoglobin retains less O2 at pH 7.2 compared to pH 7.4. C. The release of O2 from hemoglobin is not influenced by the production of CO2. D. At pH 7.2 where CO2 production is less than pH 7.4, hemoglobin releases less O2.
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