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SAT® Subject Test in Biology

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Respiratory System

SATBIO-WHSGNJ

Which of the following statements accurately describes gas exchange systems in all animals?

A

Gases are actively transported across the respiratory surfaces.

B

There is countercurrent exchange of gases across the respiratory surfaces.

C

All gas exchange systems utilize hemoglobin as a transport protein.

D

Respiratory surfaces must be moist for diffusion of gases to occur efficiently.

E

Closed circulatory systems are affiliated with all gas exchange systems.