Police stop a very drunk Richard for driving erratically at 3 AM and give him a breathalyzer test, which he fails miserably. Why does he fail so badly?
A. Excess surfactant has been secreted in response to alcohol.
B. The thickness of his respiratory membranes prevent alcohol from evaporating out of his blood.
C. His alveoli are in excellent condition.
D. The thinness of his respiratory membranes allows volatile alcohol molecules to enter the alveoli and become detectable by the machine.
Answer: D
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