Question

Exchange of oxygen and carbon dioxide in the lungs uses which mode of cellular transport?

a
endocytosis
b
facilitated diffusion
c
filtration
d
simple diffusion

Answer 1

Answer:

D: Simple Diffusion

Explanation:

Diffusion is a transport driven by a concentration gradient.  Gas molecules move from a place of high concentration to an area of low concentration. Knowing when blood is low in concentration and high in carbon dioxide it goes under gas exchange with air into the lungs.

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