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Tidal Breathing Decreases the Efficiency of Gas Exchange in Organisms

Question 225

Multiple Choice

Tidal breathing decreases the efficiency of gas exchange in organisms such as mammals for a number of reasons.Which is not one of those reasons?


A) The absence of countercurrent gas exchange
B) The existence of dead space in the airways
C) The residual volume of the lungs
D) A short diffusion path length
E) The limit in the O2 concentration gradient between air and blood

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