Breathing and Exchange of Gases
Bihar Board · Class 11 · Biology
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Quick Quiz: Breathing and Exchange of Gases
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What is the primary function of the respiratory system?
What is the average breathing rate for a healthy human?
What is Tidal Volume (TV)?
Which part of the brain regulates respiratory rhythm?
Sample Questions
How is most oxygen transported in the blood?
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Bound to red blood cells
About 97% of oxygen is transported by red blood cells bound to hemoglobin.
What muscle helps create pressure changes during breathing?
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Intercostal muscles
Intercostal muscles between the ribs help create pressure gradients necessary for inspiration and expiration.
What is the main site of gas exchange in the lungs?
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Alveoli
Alveoli are thin, irregular-walled, vascularized structures where actual gas exchange occurs.
What percent of carbon dioxide is transported as bicarbonate?
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70%
Approximately 70% of carbon dioxide is transported as bicarbonate in the blood.
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