Q. By which mechanism, oxygen is transported from lungs to cells?
A) Diffusion
B) Facilitated diffusion
C) Transpiration
D) Osmosis
Explanation
Oxygen is transported from the lungs to the cells by simple diffusion. The respiratory membrane (alveolar capillary membrane) has a limit of gaseous exchange between alveoli and pulmonary blood. This is called diffusing capacity.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.