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Questions and Answers
Which process allows CO2 to be exhaled from the lungs?
Which process allows CO2 to be exhaled from the lungs?
- CO2 reacts with water to form bicarbonate ions
- CO2 diffuses from the blood into the lungs
- CO2 diffuses from the tissues into the blood
- Bicarbonate ions combine with hydrogen ions to release CO2 and water (correct)
Where is the partial pressure of CO2 higher?
Where is the partial pressure of CO2 higher?
- In the blood
- In the air
- In the tissues (correct)
- In the lungs
What is the role of bicarbonate ions in CO2 transport?
What is the role of bicarbonate ions in CO2 transport?
- They combine with hydrogen ions to release CO2 and water
- They help maintain the acid-base balance in the body (correct)
- They react with water to form bicarbonate ions
- They allow CO2 to be exhaled from the lungs
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