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Questions and Answers
What is the percentage of O2 saturation in hemoglobin at the O2 pressure in the lung alveoli?
What is the percentage of O2 saturation in hemoglobin at the O2 pressure in the lung alveoli?
- 50%
- 66%
- 32%
- 100% (correct)
In active muscle, at what percentage is hemoglobin saturated with O2?
In active muscle, at what percentage is hemoglobin saturated with O2?
- 32% (correct)
- 100%
- 50%
- 66%
How much of their bound O2 molecules do hemoglobin molecules give up during each passage through the circulation?
How much of their bound O2 molecules do hemoglobin molecules give up during each passage through the circulation?
- 100%
- 50%
- 66% (correct)
- 32%
What does positive cooperativity improve in terms of O2 delivery?
What does positive cooperativity improve in terms of O2 delivery?
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What structural modification occurs between the α and ß subunits of hemoglobin tetramer during cooperative binding?
What structural modification occurs between the α and ß subunits of hemoglobin tetramer during cooperative binding?
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What stabilizes the structure of deoxyhemoglobin during O2 binding?
What stabilizes the structure of deoxyhemoglobin during O2 binding?
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What happens to the heme group's iron during O2 binding?
What happens to the heme group's iron during O2 binding?
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What changes shape within the subunit during O2 binding?
What changes shape within the subunit during O2 binding?
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