What Is the Rate of Diffusion in the Gas-Exchange Organ

question 26

Multiple Choice

What is the rate of diffusion in the gas-exchange organ of an air-breathing animal where the area for gas exchange in the lung is 200 mm²,the diffusion constant is 0.08,the PO₂ (partial pressure of oxygen) of the air in the lung is 140 mm Hg,the PO₂ in blood flowing into the lung is 90 mmHg,and the thickness of the gas exchange membrane is 0.001 mm?

• A)800,000
• B)125
• C)00032
• D)10,000,000

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