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What is the approximate normal composition of alveolar air?

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Important Questions on Breathing and Exchange of Gases

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 17 - Breathing and Exchange of Gases>MCQS CORNER>Q 43
The CO2 content by volume, in the atmospheric air is about
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 17 - Breathing and Exchange of Gases>MCQS CORNER>Q 44
Among the following the partial pressure of oxygen is maximum in:
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 17 - Breathing and Exchange of Gases>MCQS CORNER>Q 45
In lungs, the air is separated from the venous blood through:
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 17 - Breathing and Exchange of Gases>MCQS CORNER>Q 46
The factor which does not affect the rate of alveolar diffusion is
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 17 - Breathing and Exchange of Gases>MCQS CORNER>Q 47
Besides RBC, blood plasma also carries O2 in solution. The percentage is
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 17 - Breathing and Exchange of Gases>MCQS CORNER>Q 48
Which of the following statements is correct?
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 17 - Breathing and Exchange of Gases>MCQS CORNER>Q 49
Which of the following statements is true about RBCs in humans?
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 17 - Breathing and Exchange of Gases>MCQS CORNER>Q 50
The carbon dioxide is transported via blood to lungs mostly