A moist layer of cells across which gases are exchanged between animal cells and the external environment is known as a _____________.
A) respiration gradient
B) respiratory surface
C) respiration protein
D) respiratory circulation
E) respiration exchange

Question

A moist layer of cells across which gases are exchanged between animal cells and the external environment is known as a _____________.  
A) respiration gradient
B) respiratory surface
C) respiration protein
D) respiratory circulation
E) respiration exchange

Quizplus · Accepted Answer

A respiratory surface refers to the moist layer of cells across which gases are exchanged between animal cells and the external environment. The other options are not accurate descriptions of this process.

A Moist Layer of Cells Across Which Gases Are Exchanged