For gas exchange to be efficient,the respiratory membrane must be ________.
A) between 5 and 6 micrometers thick
B) at least 3 micrometers thick
C) 0.5 to 1 micrometer thick
D) The thickness of the respiratory membrane is not important in the efficiency of gas exchange.

Question

Quizplus · Accepted Answer

The respiratory membrane must be 0.5 to 1 micrometer thick for efficient gas exchange. This allows for easy diffusion of gases across the membrane while still providing enough surface area for sufficient exchange to occur. Thicker membranes would slow down the diffusion process, while thinner membranes would not provide enough surface area for gas exchange.

For Gas Exchange to Be Efficient,the Respiratory Membrane Must Be